Number of items: 191.
Yadav, Ashok K. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(2010)
Synthesis of novel substituted phenanthrenes and polycyclic heteroarenes by Pd-catalyzed, direct, intramolecular arylation/heteroarylation
European Journal of Organic Chemistry, 2010
(2).
pp. 338-344.
ISSN 1434-193X
Kumar, Sarvesh ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(2009)
Efficient routes to pyrazolo[3,4-b]indoles and pyrazolo[1,5-a]benzimidazoles via palladium- and copper-catalyzed intramolecular C-C and C-N bond formation
Journal of Organic Chemistry, 74
(18).
pp. 7046-7051.
ISSN 0022-3263
Singh, Prabal P. ; Yadav, A. K. ; Ila, H. ; Junjappa, H.
(2009)
Novel route to 2,3-substituted benzo[b]thiophenes via intramolecular radical cyclization
Journal of Organic Chemistry, 74
(15).
pp. 5496-5501.
ISSN 0022-3263
Yadav, A. K. ; Yadav, S. K. S. ; Siddiqui, I. ; Peruncheralathan, S. ; Ila, H. ; Junjappa, H.
(2008)
A new one-pot, three-component synthesis of 2,3,5-substituted or annulated-6-(methylthio)pyridines
Synlett, 2008
(17).
pp. 2674-2680.
ISSN 0936-5214
Kumar, Sarvesh ; Peruncheralathan, Saravanan ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(2008)
A novel anionic domino process for the synthesis of o-cyanoaryl-methylthio/alkyl/aryl/heteroaryl acetylenes
Organic Letters, 10
(5).
pp. 965-968.
ISSN 1523-7060
Kumar, Sarvesh ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(2007)
Heteroaromatic annulation studies on 10,11-dihydro-11-[bis(methylthio)methylene]dibenzoxepin-10-one: a facile access to novel dibenzoxepino[4,5]-fused heterocycles
Tetrahedron, 63
(40).
pp. 10067-10076.
ISSN 0040-4020
Sundaram, G. S. M. ; Venkatesh, C. ; Ila, H. ; Junjappa, H.
(2007)
1-(methyldithiocarbonyl)imidazole as thiocarbonyl transfer reagent: a facile one-pot three-component synthesis of 3,5- and 1,3,5-substituted-2-thiohydantoins
Synlett, 2007
(2).
0251-0254.
ISSN 0936-5214
Sundaram, G. S. M. ; Singh, B. ; Venkatesh, C. ; Ila, H. ; Junjappa, H.
(2007)
Dipolar cycloaddition of ethyl isocyanoacetate to 3-chloro-2-(methylthio)/2-(methylsulfonyl)quinoxalines: highly regio- and chemoselective synthesis of substituted imidazo[1,5-a]quinoxaline-3-carboxylates
Journal of Organic Chemistry, 72
(13).
pp. 5020-5023.
ISSN 0022-3263
Yadav, A. K. ; Peruncheralathan, S. ; Ila, H. ; Junjappa, H.
(2007)
Domino carbocationic rearrangement of α-[bis(methylthio)methylene]alkyl-2-(3/2-indolyl) cyclopropyl ketones
Journal of Organic Chemistry, 72
(4).
pp. 1388-1394.
ISSN 0022-3263
Yadav, S. K. S. ; Yadav, A. K. ; Sundaram, G. S. M. ; Ila, H. ; Junjappa, H.
(2007)
Synthesis of novel 3-arylcyclopenta[c]quinolines via acid-induced domino cyclization of 2-arylamino-2-methylthioethenyl 2-arylcyclopropyl ketones
ARKIVOC: Online Journal of Organic Chemistry, 5
.
pp. 231-242.
ISSN 1424-6376
Misra, N. C. ; Panda, K. ; Ila, H. ; Junjappa, H.
(2007)
An efficient highly regioselective synthesis of 2,3,4-trisubstituted pyrroles by cycloaddition of polarized ketene S,S- and N,S-acetals with activated methylene isocyanides
Journal of Organic Chemistry, 72
(4).
pp. 1246-1251.
ISSN 0022-3263
Venkatesh, Chelvam ; Singh, Prabal P. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(2006)
Highly diastereoselective [3+2] cyclopenta[b]annulation of indoles with 2-arylcyclopropyl ketones and diesters
European Journal of Organic Chemistry, 2006
(23).
pp. 5378-5386.
ISSN 1434-193X
Venkatesh, C. ; Sundaram, G. S. M. ; Ila, H. ; Junjappa, H.
(2006)
Palladium-catalyzed intramolecular N-arylation of heteroarenes: a novel and efficient route to benzimidazo[1,2-a]quinolines
Journal of Organic Chemistry, 71
(3).
pp. 1280-1283.
ISSN 0022-3263
Panda, Kausik ; Venkatesh, Chelvam ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(2005)
Efficient routes to acenaphthylene-fused polycyclic arenes/heteroarenes and heterocyclic fluoranthene analogues
European Journal of Organic Chemistry, 2005
(10).
pp. 2045-2055.
ISSN 1434-193X
Chakrabarti, Sriparna ; Panda, Kausik ; Misra, Nimesh C. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(2005)
Aza-annulation of polarized N,S- and N,N-ketene acetals with itaconic anhydride: synthesis of novel functionalized 1,2,3,4-tetrahydro-2-pyridones and related azabicycles
Synlett, 2005
(9).
pp. 1437-1441.
ISSN 0936-5214
Venkatesh, C. ; Singh, B. ; Mahata, P. K. ; Ila, H. ; Junjappa, H.
(2005)
Heteroannulation of nitroketene N,S-arylaminoacetals with POCl3: a novel highly regioselective synthesis of unsymmetrical 2,3-substituted quinoxalines
Organic Letters, 7
(11).
pp. 2169-2172.
ISSN 1523-7060
Peruncheralathan, S. ; Yadav, A. K. ; Ila, H. ; Junjappa, H.
(2005)
Highly regioselective synthesis of 1-aryl-3 (or 5)-alkyl/aryl-5 (or 3)-(N-cycloamino)pyrazoles
Journal of Organic Chemistry, 70
(23).
pp. 9644-9647.
ISSN 0022-3263
Peruncheralathan, S. ; Khan, T. A. ; Ila, H. ; Junjappa, H.
(2005)
Regioselective synthesis of 1-aryl-3,4-substituted/annulated-5-(methylthio)pyrazoles and 1-aryl-3-(methylthio)-4,5-substituted/annulated pyrazoles
Journal of Organic Chemistry, 70
(24).
pp. 10030-10035.
ISSN 0022-3263
Chakrabarti, Sriparna ; Panda, Kausik ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(2005)
Synthesis of functionalized 1,2,3,4-tetrahydro-β-carboline derived enamines through bischler-napieralski type cyclization of polarized ketene N,S-acetals
Synlett, 2005
(2).
pp. 309-313.
ISSN 0936-5214
Peruncheralathan, S. ; Sriram, V. ; Ila, H. ; Junjappa, H.
(2004)
Domino carbocationic rearrangements of α-[bis(methylthio)methylene]alkyl-2-(heteroaryl)cyclopropyl ketones
Tetrahedron, 60
(26).
pp. 5603-5612.
ISSN 0040-4020
Nandi, Sukumar ; Panda, Kausik ; Suresh, J. R. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(2004)
α-Oxoketene dithioacetal mediated aromatic annulation: highly efficient and concise synthetic routes to potentially carcinogenic polycyclic aromatic hydrocarbons
Tetrahedron, 60
(16).
pp. 3663-3673.
ISSN 0040-4020
Peruncheralathana, S. ; Khan, T. A. ; Ila, H. ; Junjappa, H.
(2004)
α-Oxoketene dithioacetals mediated heteroaromatic annulation protocol for benzoheterocycles: an efficient regiocontrolled synthesis of highly substituted and annulated indazoles
Tetrahedron, 60
(15).
pp. 3457-3464.
ISSN 0040-4020
Panda, Kausik ; Siddiqui, Iffat ; Mahata, Pranab K. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(2004)
Heteroannulation of 3-bis(methylthio)acrolein with aromatic amines -
a convenient highly regioselective synthesis of 2-(methylthio)quinolines and their benzo/hetero fused analogs - a modified skraup quinoline synthesis
Synlett, 2004
(3).
pp. 449-452.
ISSN 0936-5214
Syam Kumar, U. K. ; Yadav, A. K. ; Venkatesh, C. ; Ila, H. ; Junjappa, H.
(2004)
Heteroaromatic annulation studies on 2-[bis(methylthio)methylene]- 1-methyl-3-oxoindole: synthesis of novel heterocyclo[b] fused indoles
ARKIVOC: Online Journal of Organic Chemistry, 8
.
pp. 20-27.
ISSN 1424-6376
Khan, Taukeer Ahmad ; Peruncheralathan, Saravanan ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(2004)
S,S-dimethyl dithiocarbonate: a useful reagent for efficient conversion of aldoximes to nitriles
Synlett, 2004
(11).
pp. 2019-2021.
ISSN 0936-5214
Sundaram, G. S. M. ; Venkatesh, C. ; Kumar, U. K. Syam ; Ila, H. ; Junjappa, H.
(2004)
A concise formal synthesis of alkaloid cryptotackiene and substituted 6H-indolo[2,3-b]quinolines
Journal of Organic Chemistry, 69
(17).
pp. 5760-5762.
ISSN 0022-3263
Mahata, Pranab K. ; Kumar, U. K. Syam ; Sriram, V. ; Ila, H. ; Junjappa, H.
(2003)
1-Bis(methoxy)-4-bis(methylthio)-3-buten-2-one: useful three carbon synthon for synthesis of five and six membered heterocycles with masked (or unmasked) aldehyde functionality
Tetrahedron, 59
(15).
pp. 2631-2639.
ISSN 0040-4020
Chakrabarti, Sriparna ; Srivastav, Manish C. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(2003)
Aza-annulation of tetrahydroisoquinoline derived enamines: efficient and convergent routes to novel functionalized benzo[a]quinolizin-4-ones and pyrimido[6,1-a]isoquinoline derivatives
Synlett, 2003
(15).
pp. 2369-2373.
ISSN 0936-5214
Panda, Kausik ; Suresh, J. R. ; Ila, H. ; Junjappa, H.
(2003)
Heteroaromatic annulation of 2-methyl/2-cyanomethylbenzimidazole dianions with α-oxoketene dithioacetals: a highly regioselective synthetic protocol for 1,2- and 2,3-substituted/annulated pyrido[1,2-a]benzimidazoles
Journal of Organic Chemistry, 68
(9).
pp. 3498-3506.
ISSN 0022-3263
Mahata, P. K. ; Venkatesh, C. ; Kumar, U. K. Syam ; Ila, H. ; Junjappa, H.
(2003)
Reaction of α-oxoketene-N,S-arylaminoacetals with vilsmeier reagents: an efficient route to highly functionalized quinolines and their benzo/hetero-fused analogue
Journal of Organic Chemistry, 68
(10).
pp. 3966-3975.
ISSN 0022-3263
Barun, Okram ; Nandi, Sukumar ; Panda, Kausik ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(2002)
[4 + 2] cycloaromatization of 4-bis(methylthio)-3-buten-2-one with active methylene ketones: a simple and facile phenol annulation
Journal of Organic Chemistry, 67
(15).
pp. 5398-5401.
ISSN 0022-3263
Nandi, Sukumar ; Kumar, U. K. Syam ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(2002)
Domino carbocationic cyclization of functionalized cyclopropyl ketones: facile one-pot access to peri- and angularly fused polycyclic aromatic and heteroaromatic frameworks
Journal of Organic Chemistry, 67
(14).
pp. 4916-4923.
ISSN 0022-3263
Venkatesh, C. ; Ila, H. ; Junjappa, H. ; Mathur, Sanjay ; Huch, Volka
(2002)
Domino carbocationic rearrangement of aryl-2-(1-N-methyl/benzyl-3-indolyl)cyclopropyl ketones: a serendipitous route to 1H-cyclopenta[c]carbazole framework
Journal of Organic Chemistry, 67
(26).
pp. 9477-9480.
ISSN 0022-3263
Ila, H. ; Junjappa, H. ; Barun, O.
(2001)
Studies on regioselective addition of benzylic organometallics to α-oxoketene dithioacetals in our aromatic annelation protocol
Journal of Organometallic Chemistry, 624
(1-2).
pp. 34-40.
ISSN 0022-328X
Suresh, J. R. ; Kumar, U. K. Syam ; Ila, H. ; Junjappa, H.
(2001)
Aromatic and heteroaromatic annelation studies on 3-[bis(methylthio)methylene]-1-methyloxindole: synthesis of carbazoles and an efficient route to pyrido[2,3-b]indoles
Tetrahedron, 57
(4).
pp. 781-790.
ISSN 0040-4020
Mohanta, P. K. ; Peruncheralathan, S. ; Ila, H. ; Junjappa, H.
(2001)
Domino carbocationic rearrangement of α-[bis(methylthio)methylene]alkyl-2-aryl- cyclopropyl carbinols: facile access to 1-arylindanes
Journal of Organic Chemistry, 66
(4).
pp. 1503-1508.
ISSN 0022-3263
Barun, Okram ; Chakrabarti, Sriparna ; Ila, H. ; Junjappa, H.
(2001)
Ring annulation with tetrahydroisoquinoline-derived enaminones: highly convergent routes to functionalized pyrrolo[2,1-a]- and indolo[2,1-a]isoquinolines
Journal of Organic Chemistry, 66
(12).
pp. 4457-4461.
ISSN 0022-3263
Roy, Amrita ; Nandi, Sukumar ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(2001)
An expedient route to 2,3-substituted and fused benzo[a]quinolizine-4-thione framework via ring annulation with β-oxodithioesters
Organic Letters, 3
(2).
pp. 229-232.
ISSN 1523-7060
Kumar, U. K. Syam ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(2001)
A new route to spiropyrrolidinyl-oxindole alkaloids via iodide ion induced rearrangement of [(N-aziridinomethylthio)methylene]-2-oxindoles
Organic Letters, 3
(26).
pp. 4193-4196.
ISSN 1523-7060
Suresh, J. R. ; Barun, Okram ; Ila, H. ; Junjappa, H.
(2000)
α-Oxoketene dithioacetals mediated benzoannelation of aromatic heterocycles: an efficient regiocontrolled synthesis of highly substituted and polycyclic benzo[b]thiophenes
Tetrahedron, 56
(41).
pp. 8153-8160.
ISSN 0040-4020
Mohanta, Pramod K. ; Dhar, Sanchita ; Samal, S. K. ; Ila, H. ; Junjappa, H.
(2000)
1-(Methyldithiocarbonyl)imidazole: a useful thiocarbonyl transfer reagent for synthesis of substituted thioureas
Tetrahedron, 56
(4).
pp. 629-637.
ISSN 0040-4020
Mahata, P. K. ; Barun, O. ; Ila, H. ; Junjappa, H.
(2000)
Formation of acetaldehyde enolate from vinyl acetate and its reaction with aromatic and heteroaromatic aldehydes: an efficient synthesis of enals and polyenals
Synlett
(9).
pp. 1345-1347.
ISSN 0936-5214
Syam Kumar, U. K. ; Patra, Pranab K. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar ; Bharadwaj, Parimal K.
(2000)
Lewis acid-induced rearrangment of α-[bis(methylthio)methylene]ethyl-2-styrylcyclopropylcarbinols: unexpected formation of a novel bicyclo[3.2.1]octadiene framework
Journal of the Chemical Society, Perkin transactions 1
(10).
pp. 1547-1550.
ISSN 1472-7781
Barun, Okram ; Mohanta, Pramod Kumar ; Ila, H. ; Junjappa, H.
(2000)
An efficient general synthesis of novel functionalized tetrahydroisoquinoline derived enamines via polarized ketene N,S-acetals
Synlett, 2000
(5).
0653-0657.
ISSN 0936-5214
Barun, Okram ; Ila, H. ; Junjappa, H. ; Singh, Okram Mukherjee
(2000)
A facile access to 2-methylthio/alkoxy/amino-3-acylimidazo[1,2-a]pyridines based on cupric chloride promoted oxidative ring closure of α-oxoketene N,N-, N,O-, and N,N-acetals
Journal of Organic Chemistry, 65
(5).
pp. 1583-1587.
ISSN 0022-3263
Mehta, Barun K. ; Nandi, Sukumar ; Ila, H. ; Junjappa, H.
(1999)
Highly regioselective 1,2-addition of alkoxybenzyl Grignard reagents to α-oxoketene dithioacetals: a facile regiocontrolled synthesis of alkoxynaphthalenes and their condensed analogs via aromatic annelation
Tetrahedron, 55
(44).
pp. 12843-12852.
ISSN 0040-4020
Rao, M. V. Basaveswara ; Kumar, U. K. Syam ; Ila, H. ; Junjappa, H.
(1999)
Synthesis and reactions of 2-bis(methylthio)methylene-1-methyl-3-oxoindole: a facile access to benzo- and heterocyclo-fused carbazoles and indoles
Tetrahedron, 55
(38).
pp. 11563-11578.
ISSN 0040-4020
Kishore, Kaushal ; Reddy, K. R. ; Suresh, J. R. ; Ila, H. ; Junjappa, H.
(1999)
Preparation of lithium 5-lithiomethy-3-methylpyrazole-1-carboxylate and its reaction with α-oxoketene dithioacetals: a new general method for substituted and annelated pyrazolo[1,5-a]pyridines
Tetrahedron, 55
(24).
pp. 7645-7652.
ISSN 0040-4020
Baruna, Okram ; Patra, Pranab K. ; Ila, H. ; Junjappa, H.
(1999)
An expeditious synthesis of substituted and annelated pyrido[2,3-b]indoles
Tetrahedron Letters, 40
(19).
pp. 3797-3800.
ISSN 0040-4039
Roy, Amrita ; Reddy, Kethiri R. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1999)
Anionic [4 + 2] cycloaddition reactions of dihydropyrazolin-5-one dienolate with dienophiles: a novel approach for substituted and fused indazolones
Journal of the Chemical Society, Perkin Transactions 1
(20).
pp. 3001-3004.
ISSN 0300-922X
Roy, Amrita ; Reddy, K. R. ; Mohanta, Pramod K. ; Ila, H. ; Junjappat, H.
(1999)
Hydrogen peroxide/boric acid: an efficient system for oxidation of aromatic aldehydes and ketones to phenols
Synthetic Communications, 29
(21).
pp. 3781-3791.
ISSN 0039-7911
Singh, Okram Mukherjee ; Junjappa, H. ; Ila, H.
(1999)
A facile synthesis of 3-cyclopropyl- and 5-cyclopropyl-isoxazoles
Journal of Chemical Research, Synopses
(6).
pp. 398-399.
ISSN 0308-2342
Junjappa, H. ; Saxena, M. K. ; Ramaiah, D. ; Loharay, B. B. ; Rath, N. P. ; George, M. V.
(1998)
Structure and thermal isomerization of the adducts formed in the reaction of cyclohexyl isocyanide with dimethyl acetylenedicarboxylate
Journal of Organic Chemistry, 63
(26).
pp. 9801-9805.
ISSN 0022-3263
Terang, Nobin ; Mehta, Barun K. ; Ila, H. ; Junjappa, H.
(1998)
Trimethylsilyl chloride assisted conjugate addition-elimination of organocopper reagents to 2-bis(methylthio)nitroethylene: an efficient and highly stereoselective synthesis of 2-methylthio-2-alkyl/aryl-1-nitroethylenes and their application for synthesis of nitroheterocycles
Tetrahedron, 54
(42).
pp. 12973-12984.
ISSN 0040-4020
Patra, Pranab K. ; Suresh, J. R. ; Ila, H. ; Junjappa, Hiriyakkanavar
(1998)
A new regiospecific method for the synthesis of substituted phenanthridines and benzo[j]phenanthridines via aromatic annelation of 1-N-benzenesulfonyl-3-[bis(methylthio)methylene]-1,2,3,4-tetrahydroquinoline-4-one
Tetrahedron, 54
(34).
pp. 10167-10178.
ISSN 0040-4020
Kumar, U. K. Syam ; Patra, Pranab K. ; Ila, H. ; Junjappa, H.
(1998)
Benzoannelation of 2-methylindole via 1-N-carboxy-2-methylindole dianion: a direct regiospecific route to substituted and annelated carbazoles
Tetrahedron Letters, 39
(14).
pp. 2029-2032.
ISSN 0040-4039
Patra, Pranab K. ; Sriram, V. ; Ila, H. ; Junjappa, H.
(1998)
Lewis acid induced tandem carbocationic ring opening and cyclizations of α-[bis(methylthio)methylene]ethyl-2-styrylcyclopropyl ketones and carbinols: novel approach to bicyclo[3.3.0]octene and cyclopent[a]indene frameworks
Tetrahedron, 54
(3-4).
pp. 531-540.
ISSN 0040-4020
Mehta, Barun K. ; Barun, Okram ; Ila, H. ; Junjappa, H.
(1998)
An annulation route to 1,4-dimethoxynaphthalenes
Synthesis, 1998
(10).
pp. 1483-1486.
ISSN 0039-7881
Suresh, J. R. ; Patra, Pranab K. ; Ila, H. ; Junjappa, H.
(1997)
A new general regiocontrolled synthesis of highly substituted and condensed indoles via heteroaromatic annelation
Tetrahedron, 53
(43).
pp. 14737-14748.
ISSN 0040-4020
Patra, Pranab K. ; Suresh, J. R. ; Ila, H. ; Junjappa, H.
(1997)
An expedient new synthesis of substituted carbazoles via α-oxoketene acetals through heteroaromatic annelation methodology
Tetrahedron Letters, 38
(17).
pp. 3119-3122.
ISSN 0040-4039
Singh, Okram Mukherjee ; Junjappa, Hiriyakkanavar ; Ila, Hiriyakkanavar
(1997)
Reaction of lithioamino anions with α-oxoketene dithioketals: an improved and a new general method for the synthesis of α-oxoketene S, N- and N, N-ketals
Journal of the Chemical Society, Perkin Transactions 1
(23).
pp. 3561-3566.
ISSN 0300-922X
Singh, O. M. ; Ila, H. ; Junjappa, H.
(1997)
Reaction of α-bis(methylthio)methylene cyclopropyl ketones with guanidine: synthesis of 2-amino-4-alkoxy-6-(arylcyclopropyl)pyrimidines
Indian Journal of Chemistry - Section B: Organic and Medicinal Chemistry, 36
(12).
pp. 1123-1125.
ISSN 0376-4699
Singh, O. M. ; Junjappa, H. ; Ila, H.
(1997)
Synthesis of Novel 3-Cyano-4-methylthio-6-(arylcyclopropyl)-3-(1H)-pyridones and 5(3)-Methylthio-3(5)-(arylcyclopropyl)pyrazoles
Indian Journal of Chemistry - Section B: Organic and Medicinal Chemistry, 36
(11).
pp. 1056-1058.
ISSN 0376-4699
Reddy, Kethiri R. ; Rao, Mandava V. Basaveswara ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1996)
Direct synthesis of 2-(cycloalkylamino)-3,4-substituted thiophenes via selective deprotonation-cyclization of aroyl ketene N,S-acetals
Synthetic Communications, 26
(22).
4157- 4164.
ISSN 0039-7911
Yadav, K. Mallik ; Mohanta, Pramod K. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1996)
Regioselective synthesis of substituted 1-methyl- and 2-methylnaphthalenes
Tetrahedron, 52
(44).
pp. 14049-14056.
ISSN 0040-4020
Satyanarayana, Janagani ; Rao, Mandava V. Basaveswara ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1996)
Synthesis and Lewis acid assisted rearrangement of novel donor-acceptor substituted cyclopropanes: highly stereoselective [4+1] annulation approach to substituted and spiro cyclopentene derivatives
Tetrahedron Letters, 37
(20).
pp. 3565-3568.
ISSN 0040-4039
Gupta, Arun K. ; Samal, Samir K. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1996)
Trimethyl borate induced thermal cycloaromatization of 1-aryl-1-(prop-2-ynyl)-3,3-bis(alkylthio)-2-propen-1-ols through acetylenic oxy-cope rearrangement
Tetrahedron Letters, 37
(16).
pp. 2817-2820.
ISSN 0040-4039
Yadav, K. Mallik ; Suresh, Joghee R. ; Patro, Balaram ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1996)
Stepwise controlled reduction of α-oxoketene dithioacetals with Zn/ZnCl2-TMEDA in ethanol
Tetrahedron, 52
(13).
pp. 4679-4686.
ISSN 0040-4020
Mehta, Barun K. ; Dhar, Sanchita ; Ila, H. ; Junjappa, H.
(1995)
Highly efficient and selective displacement of alkylthio group on acylketene O,S-acetals by organocopper reagents: a novel route to 2-alkoxy/aryloxy-1-alkenylketones
Tetrahedron Letters, 36
(51).
pp. 9377-9380.
ISSN 0040-4039
Reddy, Kethiri R. ; Roy, Amrita ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1995)
Regiospecific generation and application of 3-lithiomethyl-2-methyl-1-phenylpyrazolin-5-one as 1,3-binucleophile in aromatic annelation: a novel approach for synthesis of 1,2-disubstituted indazolones and their condensed analogs
Tetrahedron, 51
(40).
pp. 10941-10952.
ISSN 0040-4020
Rao, Mandava V. Basaveswara ; Satyanarayana, Janagani ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1995)
Anionic [4+2] cycloaddition reactions of indole-2,3-dienolate with dienophiles: a facile regiospecific route to substituted carbazoles
Tetrahedron Letters, 36
(19).
pp. 3385-3388.
ISSN 0040-4039
Mehta, Barun K. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1995)
Highly chemoselective and stereoselective conjugate addition of benzyl copper reagents to α-oxoketene dithioacetals
Tetrahedron Letters, 36
(11).
pp. 1925-1928.
ISSN 0040-4039
Purkayastha, Makhan L. ; Bhat, Laxminarayan ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1995)
4-alkoxy-3-cyano-2(1H)-pyridones and 5-alkoxyisoxazoles and their aryl substituted and annulated derivatives from acylketene O,S-acetals
Synthesis, 1995
(6).
pp. 641-643.
ISSN 0039-7881
Gupta, Akhilesh K. ; Reddy, Kethiri R. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1995)
Cuprous bromide-promoted cyclization of ketene N,S-acetals with prop-2-ynyl bromide: synthesis of regiospecifically substituted and annelated 3-acyl(or nitro)-5-methyl pyrroles
Journal of the Chemical Society, Perkin Transactions 1
(13).
pp. 1725-1727.
ISSN 0300-922X
Reddy, Kethiri R. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1995)
Cycloaromatization of methyl (e)-4-(methyllithio)-3-(1-pyrrolidinyl)-2-butenoate with α-oxoketene N,S-acetals: direct synthesis of 3,5-bis(cycloalkylamino)biphenyls
Synthesis, 1995
(8).
pp. 929-930.
ISSN 0039-7881
Gupta, Akhilesh Kumar ; Yadav, K. Mallik ; Patro, Balaram ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1995)
Synthesis of D-ring functionalized and D-benzo/hetero-annulated estrone derivatives via α-oxoketene dithioacetal
Synthesis, 1995
(7).
pp. 841-844.
ISSN 0039-7881
Junjappa, H. ; Ila, H.
(1994)
α-Oxoketene dithioacetals as intermediates for aromatic annelation
Phosphorus, Sulfur, and Silicon and the Related Elements, 95
(1-4).
pp. 35-54.
ISSN 1042-6507
Patro, Balaram ; Deb, Bishwajit ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1994)
Rearrangement studies on 3,3-bis(methylthio)-1-(arylcyclopropyl) -2-propen-1-ols: synthesis of functionalized cyclopentenes and polyene esters
Tetrahedron, 50
(1).
pp. 255-264.
ISSN 0040-4020
Srinivasa Rao, Ch. ; Chandrasekharam, M. ; Patro, Balaram ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1994)
Facile one pot thermal dehydration and dethioacetalization of β-hydroxydithioacetals with dimethyl sulphoxide: synthesis of α,β-unsaturated aldehydes
Tetrahedron, 50
(19).
pp. 5783-5794.
ISSN 0040-4020
Reddy, Kethiri R. ; Singh, L. W. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1994)
Highly diastereoselective anionic [3 + 2] annulation strategy for functionalized cyclopentenes via α
-oxoketene dithioacetals
Journal of the Chemical Society, Perkin Transactions 1
(17).
pp. 2439-2442.
ISSN 0300-922X
Bhat, Laxminarayan ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1994)
Rearrangement studies on acylketene O-prop-2-ynyl S-methylmonothioketals
Journal of the Chemical Society, Perkin Transactions 1, 1
(13).
pp. 1749-1752.
ISSN 0300-922X
Chandrasekharam, M. ; Bhat, Laxminaraya ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1993)
Reformatsky reaction on thiocarbonyl compounds: new C-C bond forming reaction
Tetrahedron Letters, 34
(40).
pp. 6439-6442.
ISSN 0040-4039
Patra, Pranab Kumar ; Patro, Balaram ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1993)
Tandem carbocationic cyclization of bis(methylthio)methylene arylcyclopropyl ketones : a promising sequence for assembling functionalized cyclopent[a]indene framework
Tetrahedron Letters, 34
(24).
pp. 3951-3954.
ISSN 0040-4039
Mallaiah, K. ; Satyanarayana, J. ; Ila, H. ; Junjappa, H.
(1993)
Chloroallyl anion : highly regio- and diastereoselective α-addition of chloroallyl zinc reagent to carbonyl compounds
Tetrahedron Letters, 34
(19).
pp. 3145-3148.
ISSN 0040-4039
Chakrasali, R. T. ; Rao, Ch. Srinivasa ; Ila, H. ; Junjappa, H.
(1993)
Cyclocondensation of α-hydroxyimino-β-alkyl/arylimino-β-methylthioketones with hydrazine hydrate: synthesis of 3(5)-aryl-5(3)-alkyl/arylamino-4-nitroso (or amino) pyrazoles
Journal of Heterocyclic Chemistry, 30
(1).
pp. 129-134.
ISSN 0022-152X
Pooranchand, Dinah ; Satyanarayana, J. ; Ila, H. ; Junjappa, H.
(1993)
Cycloaromatization of α-oxoketene dithioacetals with 5-lithiomethyl-3-methylisoxazole: a new general method for the synthesis of substituted and annulated 1,2-benzisoxazoles
Synthesis, 1993
(2).
pp. 241-244.
ISSN 0039-7881
Sharma, S. K. ; Chakrasali, R. T. ; Ila, H. ; Junjappa, H.
(1993)
Cyclocondensation of 2,4-diamino-6(1H)pyrimidone with -oxoketene dithioacetals: synthesis of novel 5-alkylthio-7-substituted and 6,7-annulated-5-deazapteridines derivatives
Indian Journal of Chemistry - Section B: Organic and Medicinal Chemistry, 32
(11).
pp. 1173-1175.
ISSN 0376-4699
Purkayastha, Makhan L. ; Chandrasekharam, Malapaka ; Vishwakarma, Jai N. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1993)
Synthesis of α-oxoketene O-alkyl/aryl, S-alkyl acetals
Synthesis, 1993
(2).
pp. 245-249.
ISSN 0039-7881
Bhat, Laxminarayan ; Ila, H. ; Junjappa, H.
(1993)
A novel route to 2-alkoxy / aryloxythiophenes via Simmons-Smith reaction on acylketene O,S-acetals
Synthesis, 1993
(10).
pp. 959-960.
ISSN 0039-7881
Rao Ch., Srinivasa ; Chandrasekharam, M. ; Ila, H. ; Junjappa, H.
(1992)
Deprotection of thioacetals and 1,3-dithianes with dimethylsulphoxide
Tetrahedron Letters, 33
(52).
pp. 8163-8164.
ISSN 0040-4039
Bhat, Laxminarayan ; Thomas, Abraham ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1992)
Attempted Simmons-Smith reaction on α-oxoketene dithioacetals: a new general route to 3,4-substituted and annelated thiophenes
Tetrahedron, 48
(47).
pp. 10377-10388.
ISSN 0040-4020
Satyanarayana, Janagani ; Reddy, Kethiri R. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1992)
Cycloaromatization of α-oxoketene dithioacetals with enaminone derived carbanions
Tetrahedron Letters, 33
(41).
pp. 6173-6176.
ISSN 0040-4039
Patro, Balaram ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1992)
A highly stereoselective synthesis of substituted butadienes and conjugated polyenes
Tetrahedron Letters, 33
(6).
pp. 809-812.
ISSN 0040-4039
Patro, Balaram ; Deb, Biswajit ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1992)
Acid-induced ring opening of α-bis(methylthio)methylenealkyl cyclopropyl ketones: a novel route to substituted cyclopentanones through carbocationic cyclizations
Journal of Organic Chemistry, 57
(8).
pp. 2257-2263.
ISSN 0022-3263
Srinivasa Rao, Ch. ; Singh, Okram M. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1992)
A new general route to 1,2-diarylethylenes, 1,4-diarylbutadienes and 1,6-diarylhexatrienes through cycloaromatization of β-oxodithioacetals
Synthesis, 1992
(11).
pp. 1075-1077.
ISSN 0039-7881
Purkayastha, M. L. ; Patro, B. ; Ila, H. ; Junjappa, H.
(1991)
Regioselective synthesis of 3(or 5)-styryl-/(4-aryl-1,3-butadienyl)-/(6-aryl-1,3,5-hexatrienyl)-5(or 3)-(methylthio)isoxazoles and pyrazoles via α-oxoketene dithioacetals
Journal of Heterocyclic Chemistry, 28
(5).
pp. 1341-1349.
ISSN 0022-152X
Bhat, Laxminarayan ; Thomas, Abraham ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1991)
Studies on lead tetraacetate oxidation of α-oxoketene dithioacetals
Tetrahedron Letters, 47
(2).
pp. 305-312.
ISSN 0040-4039
Srinivasa Rao, Ch. ; Balu, Maliakel P. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1991)
Cycloaromatization of α-oxoketene dithioacetals and β-oxodithioacetals with benzyl-,1-(naphthylmethyl) and 2-(naphthylmethyl)magnesium halides: synthesis of condensed polynuclear aromatic hydrocarbons
Tetrahedron, 47
(20-21).
pp. 3499-3510.
ISSN 0040-4020
Satyanarayana, Janagani ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1991)
Cyclocondensation of α-oxoketene n,s-acetals with β-lithioamino-β-substituted acrylonitriles: a facile route to 2,6-substituted 4-amino-3-cyanopyridines
Synthesis, 1991
(10).
pp. 889-890.
ISSN 0039-7881
Balu, M. P. ; Bhat, L. N. ; Ila, H. ; Junjappa, H.
(1991)
Studies on addition of grignard reagents and metal hydrides to -oxoketene N,S-acetals
Indian Journal of Chemistry - Section B: Organic and Medicinal Chemistry, 30
(2).
pp. 250-255.
ISSN 0376-4699
Datta, Apurba ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1990)
Reformatskii reaction on α-oxo ketene dithioacetals: synthesis of substituted and fused ethyl 2-hydroxy-6-(methylthio)benzoates, 6-(methylthio)pyran-2-ones, and 6-(methylthio)-2(1H)pyridone derivatives
Journal of Organic Chemistry, 55
(21).
pp. 5589-5594.
ISSN 0022-3263
Gupta, Arun K. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1990)
Cycloaromatization of α-oxoketene dithioacetals with lithioacetonitrile and lithiopropionitrile: a facile route to substituted and annelated pyridines
Tetrahedron, 46
(7).
pp. 2561-2572.
ISSN 0040-4020
Thomas, Abraham ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1990)
Cyclocondensation of 2-lithiomethylthiazoles and 2-lithiomethylthiazoline with α-oxoketene dithioacetals: synthesis of substituted and annelated thiazolo- and dihydrothiazolo[3,2-a]pyridinium compounds
Tetrahedron, 46
(12).
pp. 4295-4302.
ISSN 0040-4020
Thomas, Abraham ; Chakraborty, Manjaree ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1990)
Cyclocondensation of oxoketene dithioacetals with 3-aminopyrazoles: a facile highly regioselective general route to substituted and fused pyrazolo [a̲]pyrimidines
Tetrahedron, 46
(2).
pp. 577-586.
ISSN 0040-4020
Gupta, Arun K. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1990)
Cyclocondensation of α-oxoketene dithioacetals with β-lithioamino-β- substituted acrylonitriles:synthesis of 2,6-substituted and 5,6-annelated 3-cyano-4- (methylthio) pyridines
Tetrahedron, 46
(10).
pp. 3703-3714.
ISSN 0040-4020
Chandrasekharam, Malapaka ; Asokan, Chitoorthekkathil V. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1990)
Oxoketene dithioacetals as versatile synthons for alternative 1,3 to 1,11 carbonyl transpositions: a new polyene synthesis
Tetrahedron Letters, 31
(12).
pp. 1763-1766.
ISSN 0040-4039
Junjappa, H. ; Ila, H. ; Asokan, C. V.
(1990)
α-Oxoketene-S,S-, N,S- and N,N-acetals: versatile intermediates in organic synthesis
Tetrahedron, 46
(16).
pp. 5423-5506.
ISSN 0040-4020
Srinivasa Rao, Ch. ; Chakrasali, R. T. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1990)
Regio- and chemoselective conjugate 1,4-reduction of α-oxoketene dithioacetals with sodium borohydride and sodium cyanoborohydride
Tetrahedron, 46
(6).
pp. 2195-2204.
ISSN 0040-4020
Balu, Maliakel P. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1990)
Studies on cycloaddition reactions of 1,3-diphenyl-2-azaallyl lithium and ethyl (benzylideneamino) acetate anion with α-oxoketene dithioacetals
Tetrahedron, 46
(19).
pp. 6771-6782.
ISSN 0040-4020
Bhat, Laxminarayan ; Thomas, Abraham ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1989)
Attempted Simmons-Smith reaction on α-oxoketene dithioacetals: a new general route to 3,4-substituted and annelated thiophenes
Tetrahedron Letters, 30
(23).
pp. 3093-3096.
ISSN 0040-4039
Datta, Apurba ; Pooranchand, Dinah ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1989)
Darzen's reaction on oxoketene dithioacetals: a new versatile synthesis of substituted and annelated furan-2-carboxylates
Tetrahedron, 45
(23).
pp. 7631-7640.
ISSN 0040-4020
Gupta, Akhilesh K. ; Chakrasali, R. T. ; Ila, H. ; Junjappa, H.
(1989)
Reaction of polarized ketene S,N-acetals with bromoacetaldehyde diethyl acetal: synthesis of 1-substituted 3-acyl- and 3-nitro-2-methylthiopyrroles and 1,2-annulated 3-acylpyrroles
Synthesis, 2
.
pp. 141-142.
ISSN 0039-7881
Purkayastha, M. L. ; Ila, H. ; Junjappa, H.
(1989)
Regioselective synthesis of 5-alkylthio- and 3-alkylthioisoxazoles from acylketene dithioacetals
Synthesis, 1989
(1).
pp. 20-24.
ISSN 0039-7881
Gupta, Arun K. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1989)
Studies on Diels-Alder cycloadditions of vinylketene dithioacetals
Tetrahedron, 45
(5).
pp. 1509-1516.
ISSN 0040-4020
Vishwakarma, J. N. ; Mofizuddin, M. ; Ila, H. ; Junjappa, H.
(1988)
A facile synthesis of substituted 4,5,6,7-tetrahydropyrazolo[3,4-d]-pyrimidine and 1,2,3,4-tetrahydropyrazolo[1,5-a]triazine derivatives
Journal of Heterocyclic Chemistry, 25
(5).
pp. 1387-1390.
ISSN 0022-152X
Chandrasekharam, M. ; Singh, O. Mukherjee ; Ila, H. ; Junjappa, H.
(1988)
Reaction of β-oxodithioesters with propargylamine: a facile entry to novel 2-(acylalkylidene)-5-(methylene)thiazolidines
Synthetic Communications, 28
(16).
pp. 3073-3079.
ISSN 0039-7911
Deb, B. ; Asokan, C. V. ; Ila, H. ; Junjappa, H.
(1988)
Acid catalyzed ring opening of α-bis(methylthio)methylenealkyl cyclopropyl ketones: an intramolecular alkylation approach to substituted cyclopentanones
Tetrahedron Letters, 29
(17).
pp. 2111-2114.
ISSN 0040-4039
Chakrasali, R. T. ; Ila, H. ; Junjappa, H.
(1988)
Cycloaddition of aroyl/acylketene S,N-acetals with tosyl azide: synthesis of novel 4-aroyl/acyl-5-amino-1h-1,2,3-triazoles and 3,4-annulated 1,2,3-triazoles
Synthesis, 1988
(11).
pp. 851-854.
ISSN 0039-7881
Chakrasali, R. T. ; Ila, H. ; Junjappa, H.
(1988)
Cycloaddition of sodium azide to polarized ketene S,S- and S,N-acetals: synthesis of novel substituted triazole and tetrazole derivatives
Synthesis, 1988
(6).
pp. 453-455.
ISSN 0039-7881
Balu, Maliakel P. ; Pooranchand, Dinah ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1988)
Cycloaromatization of α-oxoketene dithioacetals with 3-methyl-5-lithiomethylisoxazole: a new general approach for synthesis of substituted and annelated 1,2-benzisoxazoles
Tetrahedron Letters, 29
(4).
pp. 501-504.
ISSN 0040-4039
Gupta, Arun K. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1988)
Cycloaromatization of α-oxoketene dithioacetals with lithioacetonitrile: a facile route for 4-substituted and 4,5-annelated pyridines
Tetrahedron Letters, 29
(50).
pp. 6633-6636.
ISSN 0040-4039
Gupta, Akhilesh K. ; Ila, H. ; Junjappa, H.
(1988)
Cyclocondensation of acylketene S,N- and N,N-acetals with maleic anhydride and maleimide: a facile one-step synthesis of pyrano [3,4-c]pyrrole, pyrrolo [3,4-c]pyridine and condensed pyrrole derivatives
Synthesis, 1988
(4).
pp. 284-286.
ISSN 0039-7881
Datta, Apurba ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1988)
Novel cycloaromatization in reformatsky reaction on ∝-oxoketene dithioacetals: a regioselective synthesis of substituted ethyl 2-hydroxy-6-methylthiobenzoates
Tetrahedron Letters, 29
(4).
pp. 497-500.
ISSN 0040-4039
Vishwakarma, Jai Narain ; Thomas, Abraham ; Apparao, Satyam ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1988)
Polarized ketene S,S- and S,N-acetals. Part 52. Lead tetra-acetate oxidation of 3-anilino-3-methylthio-2-arylacrylonitriles. A novel approach to substituted indoles
Journal of the Chemical Society, Perkin Transactions 1
(2).
pp. 169-173.
ISSN 0300-922X
Singh, Laitonjam W. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1988)
Polarized ketene dithioacetals. Part 65. Studies on additions of 2-aroyl-3-cyano-1,1-bis(methylthio)propenide anions to hetero-multiple bonds
Journal of the Chemical Society, Perkin Transactions 1, 1
(8).
pp. 2365-2368.
ISSN 0300-922X
Singh, L. W. ; Ila, H. ; Junjappa, H.
(1988)
Polarized ketene dithioacetals; 60. Synthesis of novel 6-aryl-5-bis(methylthio)methyl-3(2h)-pyridazinones
Synthesis, 1988
(1).
pp. 89-90.
ISSN 0039-7881
Datta, A. ; Bhattacharjee, S. ; Ila, H. ; Junjappa, H.
(1988)
Polarized ketene dithioacetals; 71.1 Synthesis of 2,5-substituted 3-bis(methylthio)methylenetetrahydrofurans
Synthesis, 1988
(9).
pp. 725-727.
ISSN 0039-7881
Chakrasali, R. T. ; Ila, H. ; Junjappa, H.
(1988)
Reaction of acylketene S,N-acetals with malonyl chloride: synthesis of novel 1,5-substituted 4-hydroxy-6-methylthio-2 (1h)-pyridones and 6,8-substituted 4-hydroxy-7-methylthio-2,5-dioxo-5,6-dihydro-2h-pyrano [3,2-c] pyridines
Synthesis, 1988
(1).
pp. 87-89.
ISSN 0039-7881
Datta, A. ; Ila, H. ; Junjappa, H.
(1988)
Reformatsky reaction on aroylketene S,N-acetals: a facile route to 4-amino-6-aryl-2h-pyran-2-ones
Synthesis, 1988
(3).
pp. 248-250.
ISSN 0039-7881
Thomas, Abraham ; Vishwakarma, Jai N. ; Apparao, Satyam ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1988)
Studies on lead tetraacetate oxidation of α-oxoketene S,N- and N,N-acetals
Tetrahedron, 44
(6).
pp. 1667-1672.
ISSN 0040-4020
Asokan, C. V. ; Bhattacharji, S. ; Ila, H. ; Junjappa, H.
(1988)
Synthesis of methyl 5-aryl-3-oxo-4-pentenoates and novel substituted cyclopentenones
Synthesis, 1988
(4).
pp. 281-283.
ISSN 0039-7881
Asokan, C. V. ; Balu, M. P. ; Ila, H. ; Junjappa, H.
(1988)
A facile route to 5-alkyl-1,1-bis(methylthio)penta-1,4-dien-3-ones
Synthesis, 1988
(9).
pp. 727-729.
ISSN 0039-7881
Datta, A. ; Ila, H. ; Junjappa, H.
(1988)
A novel route to methyl 3-(3,4-disubstituted 5-alkylthio/amino-2-thienyl) propenoates
Synthesis, 1988
(7).
pp. 556-557.
ISSN 0039-7881
Gupta, Arun K. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1987)
Aromatic annelation via α-oxoketene dithioacetals: synthesis of thioresorcinol dimethyl ethers
Tetrahedron Letters, 28
(13).
pp. 1459-1462.
ISSN 0040-4039
Balu, Maiiakel P. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1987)
Cycloaromatization of α-oxoketene dithioacetals with 2-picolyllithium: a facile quinolizinium cation annelation
Tetrahedron Letters, 28
(26).
pp. 3023-3026.
ISSN 0040-4039
Singh, Gurdeep ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1987)
Polarised ketene dithioacetals. Part 50. Reactions of α-aroyl-α-bromoketene dithioacetals with hydrazine hydrate: formation of rearranged pyrazoles
Journal of the Chemical Society, Perkin Transactions 1
.
pp. 1945-1949.
ISSN 0300-922X
Datta, Apurba ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1987)
Polarized ketene dithioacetals 63 : stereoselective synthesis of α-ylidene-γ-butyrolactones
Tetrahedron, 43
(22).
pp. 5367-5374.
ISSN 0040-4020
Deb, B. ; Asokan, C. V. ; Ila, H. ; Junjappa, H.
(1987)
Polarized ketene dithioacetals: 55: synthesis of novel 5-aryl-2-methylthio 4H-pyran-4-ones-from cinnomyl ketene dithioacetals
Synthesis
(10).
pp. 893-895.
ISSN 0039-7881
Singh, L. W. ; Ila, H. ; Junjappa, H.
(1987)
Polarized ketene dithioacetals; 53:A facile synthesis of 2-aryl-6-methylthio-4H-pyran-4-ones and a novel cycloaromatization reaction
Synthesis, 1987
(10).
pp. 873-875.
ISSN 0039-7881
Deb, B. ; Asokan, C. V. ; Ila, H. ; Junjappa, H.
(1987)
Polarized ketene dithioacetals; 55: Synthesis of novel 5-aryl-2-methylthio-4H-pyran-4-ones from cinnamoylketene dithioacetals
Synthesis, 1987
(10).
pp. 893-895.
ISSN 0039-7881
Pooranchand, Dinah ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1987)
Reaction of dimethyl N-aryl- and N-alkylcarbonimidodithioates with aminoacetaldehyde diethyl acetal: a direct synthesis of 1-aryl- and 1-alkyl-2-methylthioimidazoles
Synthesis, 1987
(12).
pp. 1136-1138.
ISSN 0039-7881
Singh, Gurdeep ; Deb, Biswajit ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1987)
Synthesis of novel 2-amino-4-aryl-5-arylthio-6-methoxypyrimidines and 3(5)-aryl-4-arylthio-5(3)-methylthiopyrazoles via α-oxo-α-arylthioketene dithioacetals
Synthesis, 1987
(3).
pp. 286-287.
ISSN 0039-7881
Pooranchand, D. ; Ila, H. ; Junjappa, H.
(1987)
A facile general route to 2,2-disubstituted 5-alkylthio-4-aroyl-2h-imidazoles
Synthesis, 1987
(6).
pp. 547-550.
ISSN 0039-7881
Asokan, C. V. ; Ila, H. ; Junjappa, H.
(1987)
A novel route to stilbenes via cationic cycloaromatization
Synthesis, 1987
(3).
pp. 284-285.
ISSN 0039-7881
Balu, Maliakel P. ; Singh, Gurdeep ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1986)
Cycloaromatization of δ-oxoketendithioacetals with benzylmagnesium chloride: a novel naphthalene annelation reaction
Tetrahedron Letters, 27
(1).
pp. 117-120.
ISSN 0040-4039
Singh, Gurdeep ; Ila, Hiriyakkanawar ; Junjappa, Hiriyakkanavar
(1986)
Reactions of α-oxoketenedithioacetals with phenylmagnesium bromide: synthesis of novel 1-phenyl-1-methylthio-3-phenyl (or 2,3-fused)-indenes and 2,3-fused heterocyclic-1,3-diphenyl-2-alken-1-ones
Synthesis, 1986
(9).
pp. 744-747.
ISSN 0039-7881
Singh, Gurdeep ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1985)
Bromination of α-aroylketene S,S-acetals: synthesis of novel α-aroyl-α-bromoketene S,S-acetals and their further synthetic transformations
Synthesis, 1985
(2).
pp. 165-169.
ISSN 0039-7881
Asokan, Chitoorthekkathil V. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1985)
Ketendithioacetals 39. Novel solvolytic rearrangements of 1,1-bis-(methylthio)-2,4-dimethyl-5-aryl (or styryl)-1,4-pentadien-3-ols to cyclopentenone derivative
Tetrahedron Letters, 26
(8).
pp. 1087-1090.
ISSN 0040-4039
Apparao, Satyam ; Bhattacharjee, Shakti S. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1985)
Polarized ketene dithioacetals. Part 41. Studies on base-catalysed rearrangements of 1,l-bis(alkylthio)-2-aroylpenta-1,4-dienes to novel 1,5-bis(alkylthio)-2-aroylpenta-1,3-dienes via a 1,5-alkylthio shift
Journal of the Chemical Society, Perkin Transactions 1
.
pp. 641-645.
ISSN 0300-922X
Singh, Gurdeep ; Purkayastha, Makhan L. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1985)
Polarized ketene dithioacetals. Part 42. Studies on the reactions of alkyl and aryl Grignard reagents with α-oxoketene dithioacetals
Journal of the Chemical Society, Perkin Transactions 1
.
pp. 1289-1294.
ISSN 0300-922X
Apparao, S. ; Datta, A. ; Ila, H. ; Junjappa, H.
(1985)
Reformatsky reaction on α-oxoketene S,S-acetals: synthesis of novel polarized vinylketene S,S-acetals and dimethyl 2-aryl(methyl)-propene-1,3-dicarboxylates
Synthesis, 1985
(2).
pp. 169-171.
ISSN 0039-7881
Asokan, C. V. ; Ila, H. ; Junjappa, H.
(1985)
A facile and convenient synthesis of methyl 7-aryl-2,4,6-heptatrienoates
Synthesis, 1985
(2).
pp. 163-165.
ISSN 0039-7881
Singh, L. W. ; Ila, H. ; Junjappa, H.
(1985)
A facile synthesis of substituted 6-amino-2-methylthio-4H-thiopyran-4-ones
Synthesis, 1985
(5).
pp. 531-533.
ISSN 0039-7881
Singh, Gurdeep ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1984)
Cationic benzoannelation of active methylene ketones via oxoketendithioacetals
Tetrahedron Letters, 25
(44).
pp. 5095-5098.
ISSN 0040-4039
Apparao, Satyam ; Datta, Apurba ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1984)
Polarised ketene dithioacetals. Part 32. Studies on base-catalysed rearrangements of 2-bis(methylthio)methyleneindan-1-one, 2-bis(methylthio)methylene-1-tetralone, and 3-bis(methylthio)methylene-2,3-dihydro-1-benzothiopyran-4-one
Journal of the Chemical Society, Perkin Transactions 1
.
pp. 921-924.
ISSN 0300-922X
Bhattacharjee, S. S. ; Ila, H. ; Junjappa, H.
(1984)
Reaction of cyanotrimethylammonium methylid with dialkyl trithiocarbonates: a facile synthesis of 3,3-bis[alkylthio]acrylonitriles
Synthesis, 1984
(3).
p. 249.
ISSN 0039-7881
Rahman, A. ; Vishwakarma, J. N. ; Yadav, R. D. ; Ila, H. ; Junjappa, H.
(1984)
Reaction of α-ketoketene S,N-acetals with hydroxylamine: a facile general route to 5-aryl-3-(N-arylamino, N-alkylamino, or N-azacycloalkyl)-isoxazoles
Synthesis, 1984
(3).
pp. 247-429.
ISSN 0039-7881
Rahman, A. ; Ila, H. ; Junjappa, H.
(1984)
Reactions of polarized ketoketene S,N-acetals with thionyl chloride: a novel general route to 1-aroyl-(or -acyl)-2-aryl-(or -ethoxycarbonyl)-4-alkylthiothiazoles by direct heterocyclization
Synthesis, 1984
(3).
pp. 250-252.
ISSN 0039-7881
Azizur-Rahman, ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1984)
Synthesis of novel functionalized hydroxyiminoimines by direct nitrosation of β-thio-β
-amino-α,β- unsaturated ketones and their further transformations: new general syntheses for imidazole, quinoxaline, and thiazole derivatives
Journal of the Chemical Society - Series Chemical Communications
(7).
pp. 430-431.
ISSN 0022-4936
Singh, L. W. ; Gupta, A. K. ; Ila, H. ; Junjappa, H.
(1984)
A facile synthesis of 2-amino-4-alkoxy-6-styryl- and 2-amino-4-alkoxy-6-(4-aryl-1,3-butadienyl)-pyrimidines by direct cyclocondensation
Synthesis, 1984
(6).
pp. 516-518.
ISSN 0039-7881
Myrboh, B. ; Asokan, C. V. ; Ila, H. ; Junjappa, H.
(1984)
A novel, general method for the synthesis of 2-methyl-substituted and 2-unsubstituted methyl 5-aryl-2,4-pentadienoates
Synthesis, 1984
(1).
pp. 50-51.
ISSN 0039-7881
Vishwakarma, Jai N. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1983)
Keten dithioacetals. Part 22. Reaction of polarised ketoketen dithioacetals with dimethyl acetylenedicarboxylate
Journal of the Chemical Society, Perkin Transactions 1
.
pp. 1099-1102.
ISSN 0300-922X
Myrboh, Bekington ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1983)
Polarized ketene dithioacetals. 28. A new general highly stereoselective and regiospecific method for homologation of ketones to α,β-unsaturated esters via α-oxoketene dithioacetals
Journal of Organic Chemistry, 48
(26).
pp. 5327-5332.
ISSN 0022-3263
Apparao, Satyam ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1983)
Polarized ketene dithioacetals. Part 26. Studies on base-catalysed rearrangements of 3,3-bis(alkylthio)-2-methyl-1-arylprop-2-en-1-ones and 3,3-bis(methylthio)-2-benzyl-1-phenylprop-2-en-1-one
Journal of the Chemical Society, Perkin Transactions 1
.
pp. 2837-2844.
ISSN 0300-922X
Aggarwal, Veena ; Ila, H. ; Junjappa, H.
(1983)
Reaction of polarised α-ketoketene N,N-acetals with dimethyl acetylenedicarboxylate: synthesis of novel 5-aroyl-1-aryl-6-arylamino-4-methoxycarbonyl-2-oxo-1,2-dihydropyridines
Synthesis, 1983
(2).
pp. 147-149.
ISSN 0039-7881
Bhattacharjee, S. S. ; Ila, H. ; Junjappa, H.
(1983)
Rearrangement studies on S-propargyl-N-azacycloalkyl acetals: synthesis of novel 3-aroyl-2-(N-azacycloalkyl)-4-methylthiophenes
Synthesis, 1983
(5).
pp. 410-411.
ISSN 0039-7881
Apparao, S. ; Rahman, A. ; Ila, H. ; Junjappa, H.
(1982)
Base catalysed rearrangement of 2-methyl-3,3-bisalkylthioacrylophenones to 2-alkylthiomethyl-3-alkylthioacrylophenones via mobile keto allyl intermediates
Tetrahedron Letters, 23
(9).
pp. 971-974.
ISSN 0040-4039
Bhattacharjee, S. S. ; Ila, H. ; Junjappa, H.
(1982)
Cyanotrimethylammonium methylid, formation and reaction with α,β-unsaturated carbonyl compounds: novel cyclopropanation with an ammonium ylid
Synthesis, 1982
(4).
pp. 301-303.
ISSN 0039-7881
Myrboh, B. ; Ila, H. ; Junjappa, H.
(1982)
Lead(IV) acetate oxidations of 3-substituted and 3,4-disubstituted 2-pyrazoline-5-ones: a facile synthesis of 2-alkynoic and 2,3-alkadienoic (allenic) esters
Synthesis, 1982
(12).
pp. 1100-1102.
ISSN 0039-7881
Myrboh, B. ; Singh, L. W. ; Ila, H. ; Junjappa, H.
(1982)
Partial reductive demethylthiolation of a-ketoketene S,S-acetals with sodium borohydride/nickel chloride: a new, general method for 2-methylthio-1-alkenyl ketones
Synthesis, 1982
(4).
pp. 307-309.
ISSN 0039-7881
Apparao, S. ; Rahman, A. ; Ila, H. ; Junjappa, H.
(1982)
Reaction of 2-alkylthiomethyl-3-alkylthioacrylophenones with hydrazine, guanidine, and amines: synthesis of novel pyrazoles, pyrimidines, and enaminoketones
Synthesis, 1982
(9).
pp. 792-795.
ISSN 0039-7881
Aggarwal, V. ; Singh, G. ; Ila, H. ; Junjappa, H.
(1982)
Reaction of α-ketoketene S,N-acetals with cyanoacetamide: a new general method for substituted and fused 4-(N-alkylamino-, N-arylamino-, or N-morpholino)-3-cyano-2(1H)-pyridones
Synthesis, 1982
(3).
pp. 214-216.
ISSN 0039-7881
Aggarwal, V. ; Ila, H. ; Junjappa, H.
(1982)
Reactions of polarized ketene S,N- and N,N-acetals with benzoyl isothiocyanate: synthesis of novel 1-n-aryl(alkyl)-2-phenyl-5- aroyl-6-methylthio(n-alkylamino)-4-thioxopyrimidines
Synthesis, 1982
(1).
pp. 65-68.
ISSN 0039-7881
Singh, G. ; Bhattacharjee, S. S. ; Ila, H. ; Junjappa, H.
(1982)
A facile one-step synthesis of methyl β-oxodithiocarboxylates
Synthesis, 1982
(8).
pp. 693-694.
ISSN 0039-7881
Bhattacharjee, S. S. ; Asokan, C. V. ; Ila, H. ; Junjappa, H.
(1982)
A facile, one-step synthesis of 3-alkyl- or 3-aryl-4-methyl-2-(substituted-methylene)-2,3-dihydro-1,3-thiazoles
Synthesis, 1982
(12).
pp. 1062-1064.
ISSN 0039-7881
Dwivedi, C. M. ; Junjappa, H. ; Murti, C. R. Krishna
(1981)
In vitro screening of potential anti-cancer chemicals: effect of purine pyrimidine analogues on seed germination
Toxicology, 21
(3).
pp. 251-260.
ISSN 0300-483X
Myrboh, B. ; Ila, H. ; Junjappa, H.
(1981)
One-step synthesis of methyl arylacetates from acetophenones using lead(IV) acetate
Synthesis, 1981
(2).
pp. 126-127.
ISSN 0039-7881
Aggarwal, V. ; Kumar, A. ; Ila, H. ; Junjappa, H.
(1981)
Polarized ketene N,N- and S,N-acetals as novel enamine components for the Nenitzescu indole synthesis
Synthesis, 1981
(2).
pp. 157-158.
ISSN 0039-7881
Rao, S. Appa ; Kumar, A. ; Ila, H. ; Junjappa, H.
(1981)
Reaction of aromatic amines with α-chloroacrylonitrile: a convenient, two-step synthesis of N aryl-2-cyanoaziridines using a phase-transfer catalyst
Synthesis, 1981
(8).
pp. 623-625.
ISSN 0039-7881
Apparao, S. ; Ila, H. ; Junjappa, H.
(1981)
A new, general synthesis of 1-substituted 2-amino-4-aroyl-5-methylthiopyrroles using α-ketoketene S,S-acetals
Synthesis, 1981
(1).
pp. 65-66.
ISSN 0039-7881
Kumar, A. ; Aggarwal, V. ; Ila, H. ; Junjappa, H.
(1980)
A novel and convenient synthesis of 2-amino-4-(N-alkyl-N-arylamino)-pyrimidines using polarized ketene S,S- and S,N-acetals
Synthesis, 1980
(9).
pp. 748-751.
ISSN 0039-7881
Rastogi, R. R. ; Kumar, A. ; Ila, H. ; Junjappa, H.
(1978)
Keten SS-acetals. Part 10. Reaction of α-oxoketen SS-acetals with N-alkylcyanoacetamides: a new general method for substituted and fused 2,7-dialkyl-8-amino-5-cyano-2,7-naphthyridine-1,6(2H,7H)-diones
Journal of the Chemical Society, Perkin Transactions 1
.
pp. 554-558.
ISSN 0300-922X
Rastogi, R. R. ; Kumar, A. ; Ila, H. ; Junjappa, H.
(1978)
Keten SS-acetals. Part 9. Reaction of α-oxo- and α-cyano-keten SS-acetals with cyanoacetamide: a new general method for substituted and fused 4-alkylthio-3-cyano-2(1H)-pyridones and formation of novel pyridones through base-induced rearrangements
Journal of the Chemical Society, Perkin Transactions 1
(6).
pp. 549-553.
ISSN 0300-922X
Kumar, Arvind ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1978)
Keten dithioacetals. Part 11. Reaction of 3-cyano-4-methylthio-2(1H)-pyridones with hydrazine and guanidine: synthesis of novel substituted and fused pyrazolo[4,3-c]pyridone and pyrido[4,3-d]pyrimidine derivatives
Journal of the Chemical Society, Perkin Transactions 1
.
pp. 857-862.
ISSN 0300-922X
Kumar, Arvind ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1976)
General method for the synthesis of 2-methylthio-3-substituted pyrroles using keten dithioacetals
Journal of the Chemical Society - Series Chemical Communications
(15).
pp. 593-594.
ISSN 0022-4936
Chauhan, S. M. S. ; Junjappa, Hiriyakkanavar
(1976)
Ketene-S,S,-acetals-VI: synthesis of 3,3-bis-(methylthio)-2-propene-2-alkyl-1-aryl-1-ones and their reaction with guanidine: a novel route for pyrimidine synthesis
Tetrahedron, 32
(15).
pp. 1911-1916.
ISSN 0040-4020
Chauhan, S. M. S. ; Junjappa, H.
(1976)
Ketene-S,S-acetals-V: the reactions of α-keto and α-cyanoketene-S,S-acetals with guanidine and thiourea: a new general synthesis of alkoxy-pyrimidines
Tetrahedron, 32
(14).
pp. 1779-1787.
ISSN 0040-4020
Kumar, Arvind ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar ; Mhatre, Sushila
(1976)
Reaction of keten dithio-acetals with aziridine. Iodide ion-catalysed rearrangement of thio-aziridino-methylene compounds to novel Δ1-2-methylthio-3,3-disubstituted pyrrolines
Journal of the Chemical Society - Series Chemical Communications
(15).
pp. 592-593.
ISSN 0022-4936
Rastogi, Roopa R. ; Ila, Hiriyakkanavar ; Junjappa, Hiriyakkanavar
(1975)
A novel method for the synthesis of substituted and fused 3-cyano-4-methylmercapto-2(1H)-pyridones using a-oxoketen S,S-diacetals
Journal of the Chemical Society - Series Chemical Communications
(15).
p. 645.
ISSN 0022-4936
Newman, Melvin S. ; Junjappa, Hiriyakkanavar
(1971)
Synthesis of a dl-polymer and an active (+) polymer containing the 2,4,5,7-tetranitrofluorenylidenaminooxysuccinic moiety. Chromatographic studies
Journal of Organic Chemistry, 36
(18).
pp. 2606-2609.
ISSN 0022-3263
Hiriyakkanavar, J. ; Siddappa, S. ; Sirsi, M.
(1965)
Anti-5-hydroxytryptamine activity of some substituted tryptamines
Indian Journal of Experimental Biology, 3
.
pp. 56-58.
ISSN 0019-5189
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