6533b7d9fe1ef96bd126c170

RESEARCH PRODUCT

The reaction betweentriazolobenzopyridinium and triazolothiazolium ylides with dimethyl acetylenedicarboxylate

subject

description

Abstract The reaction of some [1,2,3]triazolo[1,5- a ]quinolinium 1,2 , [1,2,3]triazolo[5,1- a ]isoquinolinium 3,4 and [1,2,3]triazolo[5,1- b ]thiazolium 5,6 ylides with dimethyl acetylenedicarboxylate is described. Compounds as dimethyl pyrrolo[1,2- a ]quinoline-1,2-dicarboxylate 19 , dimethyl pyrrolo[2,1- a ]isoquinoline-2,3-dicarboxylate 20 , 1,1-dicyano-2,3-dimethoxycarbonyl-1 H -pyrido[1,2- a ]quinoline 24 , 4,4-dicyano-2,3-dimethoxycarbonyl-4 H -pyrido[2,1- a ]isoquinoline 25 , and 7-methyl-5,6-dimethoxy-carbonylpyrrolo[2,1- a ]thiazole 14b , are formed.