19. on a Report of Pristolepis Marginatus Jerdon (Perciformes : Percoidei : Nandidae) from Karnataka

Volume: 97Start Page: 440End Page: 44

One-pot, four-component reaction of isocyanides, dimethyl acetylenedicarboxylate, and cyclobutene-1,2-diones: a synthesis of novel spiroheterocycles

Isocyanides, dimethyl acetylenedicarboxylate, and cyclobutene-1,2-diones react in one-pot to afford novel spirocyclic compounds with double insertion of the isocyanide

Novel pyridine-catalyzed reactionof dimethyl acetylenedicarboxylate with aldehydes and N-Tosylimines: efficient synthesis of 2-benzoylfumarates and 1-azadienes

A novel reaction of 1,4-dipolar intermediate 3,generated from pyridine and dimethyl acetylenedicarboxylate, witharomatic aldehydes, resulted in the facile synthesis of 2-benzoylfumaratesvia the elimination of pyridine, whereas with N-tosyliminesas dipolarophiles the reaction afforded highly substituted 1-azadienes.The reaction of pyridine and dimethyl acetylenedicarboxylate withN-substituted isatins, resulted in a novel three component condensation,affording spiropyrido[2,1-b][1,3]oxazinoderivatives in high yields via 1,4-dipolar cycloaddition