Items where Author is "Barun, Okram"

Article

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

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

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

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. ; Barun, Okram ; Ila, H. ; Junjappa, H. (1998) An annulation route to 1,4-dimethoxynaphthalenes Synthesis, 1998 (10). pp. 1483-1486. ISSN 0039-7881