Abstract
Orthoamides of alkynecarboxylic acids 10 react with 2-thienyl-acetonitrile under condensation to give ketene aminals. In the reaction of orthoamides 10 with 2-benzimidazolyl-acetonitrile tricyclo[1,2-a]benzimidazol-4-carbonitriles are formed under similar conditions. From 2-methyl-1,3-disubstituted-triazin-2,4-diones and orthoamides 10 the ketene aminals result at room temperature.
摘要
炔羧酸原酰胺 10 与 2-噻吩基乙腈发生缩合反应,生成烯酮氨基化合物。在类似条件下,原酰胺 10 与 2-苯并咪唑基乙腈反应生成三环[1,2-a]苯并咪唑-4-甲腈。室温下,2-甲基-1,3-二取代三嗪-2,4-二酮和原酰胺 10 生成烯酮酰胺。