2-Alkyl-5-imino-1-benzopyrano[3,4-c]pyridin-4(3H,5H)-ones and related compounds from reaction of 3-carbamoyl-2-iminochromens with methyl ketones
作者:Conor N. O'Callaghan
DOI:10.1039/p19810002273
日期:——
The base-catalysed condensation of 3-carbamoyl-2-iminochromens with methyl ketones yields 2-alkyl-5-imino-1-benzopyrano[3,4-c]pyridin-4(3H,5H)-ones, 2-alkyl-1-benzopyrano[3,4-c]pyridin-4(3H),5-diones, and 3-cyano-4-(2-hydroxyphenyl)-6-methyl-3,4-dihydropyridin-2-ones (which exist in two tautomeric forms).
3-氨基甲酰基-2-亚氨基色氨酸与甲基酮的碱催化缩合反应生成2-烷基-5-亚氨基-1-苯并吡喃并[3,4- c ]吡啶-4(3 H,5 H)-ones,2-烷基-1-苯并吡喃并[3,4- c ]吡啶-4(3 H),5-二酮和3-氰基-4-(2-羟基苯基)-6-甲基-3,4-二氢吡啶-2-酮(以两种互变异构形式存在)。