Browse by Fellow

Joshi, Uday M. ; Patkar, Laxmikant N. ; Rajappa, Srinivasachari (2004) Concomitant desulfurization and transesterification of alkyl thionocarbamates Synthetic Communications, 34 (1). pp. 33-39. ISSN 0039-7911

Mohanalingam, K. ; Das, Puspendu Kumar ; Rajappa, S. (2001) Second harmonic generation in some donor-acceptor ethylenes-I Spectrochimica Acta Part A: Molecular Spectroscopy, 48 (11-12). pp. 1647-1656. ISSN 0584-8539

Rajappa, Srinivasachari (1999) Nitroenamines: an update Tetrahedron, 55 (23). pp. 7065-7114. ISSN 0040-4020

Nagarajana, K. ; Rajappa, S. (1999) New drug development in India Pharmaceutical News, 6 . pp. 30-33.

Surange, Sheetal S. ; Rajappa, Srinivasachari (1998) Oxidative nucleophilic substitution of hydrogen by primary amines in 2-nitrobenzo[b]thiophene Tetrahedron Letters, 39 (39). pp. 7169-7172. ISSN 0040-4039

Anbazhagan, Mariappan ; Deshmukh, Abdul Rakeeb A. S. ; Rajappa, Srinivasachari (1998) Conversion of carbonimidodithioates into unsymmetrical di- and tri- substituted ureas including urea dipeptides Tetrahedron Letters, 39 (21). pp. 3609-3612. ISSN 0040-4039

Chittari, Pabba ; Jadhav, Vasant R. ; Nagappa Ganesh, K. ; Rajappa, Srinivasachari (1998) Synthesis and metal complexation of chiral 3-mono-or 3, 3-bis-allyl-2-hydroxypyrrolopyrazine-1, 4-diones Journal of the Chemical Society, Perkin Transactions 1, 7 . pp. 1319-1324. ISSN 0300-922X

Surange, Sheetal S. ; Kumaran, Govindaraj ; Rajappa, Srinivasachari ; Pal, Debnath ; Chakrabarti, Pinak (1997) Push-pull butadienes: evidence for a possible C-H…S hydrogen bond in 4-(methylthio)-4-nitro-1-(pyrrolidin-1-yl)buta-1,3-diene Helvetica Chimica Acta, 80 (8). pp. 2329-2336. ISSN 0018-019X

Surange, Sheetal S. ; Kumaran, Govindaraj ; Rajappa, Srinivasachari ; Rajalakshmi, K. ; Pattabhi, Vasantha (1997) Synthesis and characterization of 1-amino-4-methylthio-2-nitro-1,3-butadienes Tetrahedron, 53 (25). pp. 8531-8540. ISSN 0040-4020

Anbazhagan, Mariappan ; Indrasena Reddy, T. ; Rajappa, Srinivasachari (1997) Conversion of carbonimidodithioates to carbamates Journal of the Chemical Society, Perkin Transactions 1 (11). pp. 1623-1628. ISSN 0300-922X

Anbazhagan, Mariappan ; Dixit, Arun N. ; Rajappa, Srinivasachari (1997) Reaction of lactim ethers and lactim sulfides with electrophiles: attackat nitrogen followed by ring-opening under neutral conditions Journal of the Chemical Society, Perkin Transactions 1 (16). pp. 2421-2424. ISSN 0300-922X

Wilken, Jörg ; Wallbaum, Sabine ; Saak, Wolfgang ; Haase, Detlef ; Pohl, Siegfried ; Martens, Jürgen ; Patkar, Laxmikant N. ; Dixit, Arun N. ; Chittari, Pabba ; Rajappa, Srinivasachari (1996) Utilization of industrial waste materials, 6. Utilization of derivatives of the bicyclic proline analog (all-R)-octahydrocyclopenta[b]pyrrol-2-carboxylic acid in the stereoselective synthesis Liebigs Annalen, 1996 (6). pp. 927-934. ISSN 0947-3440

Patkar, Laxmikant N. ; Rakeeb, Abdul ; Deshmukh, A. S. ; Rajappa, Srinivasachari (1995) Alkylation of enaminothiones: what causes the observed stereoselectivity? Tetrahedron, 36 (51). pp. 9373-9376. ISSN 0040-4020

Thomas, Achamma ; Rajappa, Srinivasachari (1995) Synthesis of cyclic hydroxamic acids from aliphatic nitro compounds Tetrahedron, 51 (38). pp. 10571-10580. ISSN 0040-4020

Dixit, Arun N. ; Reddy, K. Venodhar ; Rakeeb, Abdul ; Deshmukh, A. S. ; Rajappa, Srinivasachari ; Ganguly, Bishwajit ; Chandrasekhar, Jayaraman (1995) Conformational preferences of α-functionalised keten-S,N-acetals: potential role of SO and SS interactions in solution Tetrahedron, 51 (5). pp. 1437-1448. ISSN 0040-4020

Deshpande, Sunita R. ; Likhite, Anjali P. ; Rajappa, Srinivasachari (1994) Transesterification of alkyl carbamate to aryl carbamate: effect of varying the alkyl group Tetrahedron, 50 (34). pp. 10367-10370. ISSN 0040-4020

Dixit, Arun N. ; Tandel, Sagun K. ; Rajappa, Srinivasachari (1994) Facile acid catalyzed ring cleavage of N-acylated lactams Tetrahedron Letters, 35 (33). pp. 6133-6134. ISSN 0040-4039

Chittari, Pabba ; Thomas, Achamma ; Rajappa, Srinivasachari (1994) Synthesis of novel cyclic hydroxamic acids Tetrahedron Letters, 35 (22). pp. 3793-3796. ISSN 0040-4039

Tandel, Sagun K. ; Rajappa, Srinivasachari ; Pansare, Sunil V. (1993) Conversion of thiocarbamates to carbamates Tetrahedron, 49 (34). pp. 7479-7486. ISSN 0040-4020

Indrasena Reddy, T. ; Bhawal, Baburao M. ; Rajappa, Srinivasachari (1993) Unique zeolite-catalyzed synthesis of nitroketene S,N-acetals Tetrahedron, 49 (10). pp. 2101-2108. ISSN 0040-4020

Thomas, Achamma ; Manjunatha, Sulur G. ; Rajappa, Srinivasachari (1992) Synthesis of dipeptides via addition of N-(nitroacetyl)amino-acid derivatives to Michael acceptors: scope, stereoselectivity, and absolute configuration Helvetica Chimica Acta, 75 (3). pp. 715-720. ISSN 0018-019X

Manjunatha, Sulur G. ; Chittari, Pabba ; Rajappa, Srinivasachari (1991) Nitroacetyl group as a peptide synthon: synthesis of dipeptides with an α,α-bisallylglycine residue at the N-terminus Helvetica Chimica Acta, 74 (5). pp. 1071-1080. ISSN 0018-019X

Manjunatha, Sulur G. ; Rajappa, Srinivasachari (1991) From N-nitroacetylproline to leucylproline Journal of the Chemical Society, Chemical Communications (6). pp. 372-373. ISSN 0022-4936

Manjunatha, Sulur G. ; Venodhar Reddy, K. ; Rajappa, Srinivasachari (1990) Nitroketene-s, n-acetals as precursors for nitroacetamides and the elusive nitrothioacetahides Tetrahedron Letters, 31 (9). pp. 1327-1330. ISSN 0040-4039

Deshmukh, Abdul Rakeeb A. S. ; Indrasena Reddy, T. ; Bhawal, Baburao M. ; Shiralkar, Vasudeo P. ; Rajappa, Srinivasachari (1990) Zeolites in organic syntheses: a novel route to functionalised ketene S,N-acetals Journal of the Chemical Society, Perkin Transactions 1 (4). pp. 1217-1218. ISSN 0300-922X

Rajappa, Srinivasachari ; Bhawal, Baburao M. ; Deshmukh, Abdul Rakeeb A. S. ; Manjunatha, Sulur G. ; Chandrasekhar, Jayaraman (1989) Is the nitro group attracted towards sulphur? Journal of the Chemical Society, Chemical Communications (22). pp. 1729-1730. ISSN 0022-4936

Nagarajan, Kuppuswamy ; Shankar, Radhakrishnan Gowri ; Rajappa, Srinivasachari ; Shenoy, Sharada J. ; Costa-Pereira, Raby (1989) Nitroimidazoles. XXI. 2,3-dihydro-6-nitroimidazo [2,1-b] oxazoles with antitubercular activity European Journal of Medicinal Chemistry, 24 (6). pp. 631-633. ISSN 0223-5234

Nagarajan, K. ; David, J. ; Rajappa, S. ; Talwalker, S. (1985) Anticonvulsant 4-aryl semicarbazides & thioureas Indian Journal of Chemistry - Section B: Organic and Medicinal Chemistry, 24 . pp. 934-939. ISSN 0376-4699

Rajappa, Srinivasachari ; Nagarajan, Kuppuswamy ; Venkatesan, Kailasam ; Kamath, Nirupa ; Padmanabhan, Vipanjeri Madabhusi ; Philipsborn, Wolfgang von ; Chen, Ban Chin ; Muller, Raffaelo (1984) Studies on the stereochemistry of 2-(nitromethylidene)-heterocycles Helvetica Chimica Acta, 67 (7). pp. 1669-1680. ISSN 0018-019X

Rajappa, Srinivasachari ; Advani, Bhagwan G. ; Kartha, Gopinath (1984) c-Thioacylation by the Willgerodt-Kindler reaction. Structure of the anomalous products from salicylaldehydes. X-ray crystal structure of the betaine from 1,2-dimethyl-1,4,5,6-tetrahydropyrimidine, sulphur, and 3,5-dichlorosalicylaldehyde Journal of the Chemical Society, Perkin Transactions 1 . pp. 1631-1634. ISSN 0300-922X

Rajappa, Srinivasachari ; Advani, Bhagwan G. ; Kartha, Gopinath ; Hartloff, Holly (1983) A novel ring-opening of a 2-alkyl-5-imino-4-nitro-2,5-dihydroisothiazole by cyanide ion Journal of the Chemical Society, Perkin Transactions 1 . pp. 1953-1955. ISSN 0300-922X

Rajappa, Srinivasachari ; Nair, Mohan D. ; Advani, Bhagwan G. ; Sreenivasan, Ramaswami (1981) Unexpected substitution of the acyl group in isothiazole-ring formation. Attempted conversion of 1-acyl-2,2-diaminoethylenes into 2-acyl-3,3-diaminoacrylonitriles Journal of the Chemical Society, Perkin Transactions 1 . pp. 3161-3163. ISSN 0300-922X

Rajappa, Srinivasachari ; Rajagopalan, Tuticorin G. ; Sreenivasan, Ramaswami ; Kanal, Suriya (1979) Isothiocyanate transposition through a retro-ene reaction: pyrolysis of acylthioureas Journal of the Chemical Society, Perkin Transactions 1 . pp. 2001-2004. ISSN 0300-922X

Rajappa, Srinivasachari ; Nair, Mohan D. ; Advani, Bhagwan G. ; Sreenivasan, Ramaswami ; Desai, Jagdish A. (1979) A general synthesis of thiazoles. Part 3. Comparative evaluation of different functionalised thioureas as precursors Journal of the Chemical Society, Perkin Transactions 1 . pp. 1762-1764. ISSN 0300-922X

Rajappa, Srinivasachari ; Nagarajan, Kuppuswamy (1978) Nitroenamines. Part 6. Carbon-13 nuclear magnetic resonance spectral studies on 1-amino-2-nitro- and 1,1-diamino-2-nitro-ethylenes Journal of the Chemical Society, Perkin Transactions 2, 1978 (9). pp. 912-914. ISSN 1472-779X

Rajappa, Srinivasachari ; Advani, Bhagwan G. (1975) 4-Acetyl-3-benzylidenepiperazine-2,5-diones Journal of the Chemical Society, Perkin Transactions 1 (4). pp. 349-350. ISSN 0300-922X

Rajappa, Srinivasachari ; Advani, Bhagwan G. (1974) Conformational studies on tricyclic quinazolones derived from cyclodipeptides incorporating sarcosine Journal of the Chemical Society, Perkin Transactions 1 . pp. 2122-2124. ISSN 0300-922X

Rajappa, S. ; Nagarajan, K. ; Akerkar, A. S. (1970) Reactions of arylaminomethylenemalonates with amines Indian Journal of Chemistry, 8 . pp. 499-501. ISSN 0019-5103

Nagarajan, K. ; Rajappa, S. (1969) NMR spectral studies of cyclic enamines Tetrahedron Letters, 10 (27). pp. 2293-2296. ISSN 0040-4039

Govindachari, T. R. ; Rajappa, S. ; Nagarajan, K. (1968) (4-phenyl-2-thiazolyl)-acetone and its enamines: synthesis and NMR. spectra Helvetica Chimica Acta, 51 (8). 2102 - 2110. ISSN 0018-019X

Govindachari, T. R. ; Rajappa, S. ; Akerkar, A. S. ; Iyer, V. S. (1967) Hydroxamic acids and their derivatives-IV: further studies on the use of esters of pivalohydroxamic acid for peptide synthesis Tetrahedron, 23 (12). pp. 4811-4815. ISSN 0040-4020

Nagarajan, K. ; Rajappa, S. ; Iyer, V. S. (1967) Hydroxamic acids and their derivatives. II. Reaction of hydroxamic acids with dicyclohexyl carbodiimide Tetrahedron, 23 (2). pp. 1049-1054. ISSN 0040-4020

Rajappa, S. ; Nagarajan, K. ; Iyer, V. S. (1967) Hydroxamic acids and their derivatives. III. Preparation of esters of pivalohydroxamic acid and their use in peptide synthesis Tetrahedron, 23 (12). pp. 4805-4809. ISSN 0040-4020

Govindachari, T. R. ; Nagarajan, K. ; Rajappa, S. ; Akerkar, A. S. ; Iyer, V. S. (1966) Synthesis of O-acylbenzohydroxamic acids and their use in peptide synthesis Tetrahedron, 22 (10). pp. 3367-3372. ISSN 0040-4020

Govindachari, T. R. ; Pai, B. R. ; Rajappa, S. ; Viswanathan, N. ; Kump, W. G. ; Nagarajan, K. ; Schmid, H. (1963) The structure of the Kopsins Helvetica Chimica Acta, 46 (2). pp. 572-577. ISSN 0018-019X

Govindachari, T. R. ; Nagarajan, K. ; Rajappa, S. (1962) Structure of calycanthidine Journal of Scientific & Industrial Research, 21B (9). pp. 455-456. ISSN 0022-4456

Govindachari, T. R. ; Pai, B. R. ; Rajappa, S. ; Viswanathan, N. ; Kump, W. G. ; Nagarajan, K. ; Schmid, H. (1962) The structure of the Kopsins. (Preliminary communication) Helvetica Chimica Acta, 45 (4). pp. 1146-1152. ISSN 0018-019X

Govindachari, T. R. ; Pai, B. R. ; Ragade, I. S. ; Rajappa, S. ; Viswanathan, N. (1961) Chemical examination of Tylophora asthmatica-V: structure of tylophorinine Tetrahedron, 14 (3-4). pp. 288-295. ISSN 0040-4020

Govindachari, T. R. ; Rajappa, S. ; Sudarsanam, V. (1961) Condensed pyrrole compounds-I: 3H-pyrrolo(2,3,-c)quinolines Tetrahedron, 16 (1-4). pp. 1-4. ISSN 0040-4020

Govindachari, T. R. ; Rajappa, S. (1961) Echitamine Tetrahedron, 15 (1-4). pp. 132-143. ISSN 0040-4020

Govindachari, T. R. ; Lakshmikantham, M. V. ; Pai, B. R. ; Rajappa, S. (1960) Chemical examination of Tylophora asthmatica-III : the complete structure of tylophorine Tetrahedron, 9 (1-2). pp. 53-57. ISSN 0040-4020

Gopinath, K. W. ; Govindachari, T. R. ; Rajappa, S. (1960) Synthesis of calycanine Tetrahedron, 8 (3-4). pp. 291-292. ISSN 0040-4020

Govindachari, T. R. ; Rajappa, S. (1960) Ultraviolet absorption spectra of dihydroindole alkaloids Proceedings of the Indian Academy of Sciences, Section A, 51 (6). pp. 319-321. ISSN 0370-0089

Govindachari, T. R. ; Nagarajan, K. ; Pai, B. R. ; Rajappa, S. (1958) Chemical investigation of Khet-papra Journal of Scientific & Industrial Research, 17B (2). pp. 73-75. ISSN 0022-4456

Govindachari, T. R. ; Nagarajan, K. ; Rajappa, S. (1958) A biogenetic scheme for gentianine Cellular and Molecular Life Sciences, 14 (1). p. 5. ISSN 1420-682X

Govindachari, T. R. ; Nagarajan, K. ; Rajappa, S. (1957) Structure of gentianine Journal of the Chemical Society, 1957 . pp. 551-556. ISSN 0368-1769