Abstract A novel series of 5,7-diamino-4-aryl-6-cyano-2-cyanoimino-3,4-dihydro-1H-pyrido[2,3-d]pyrimidines (aryl-CIDHPPMs) 3a–i was prepared via the one-pot four-component reaction of cyanoguanidine with aromatic aldehydes and malononitrile with molar ratio (1:1:2) using sodium methoxide as catalyst. These new polyfunctionlized aryl-CIDHPPMs were also synthesized by a classical route via reaction of
摘要 制备了一系列新的 5,7-diamino-4-aryl-6-cyano-2-cyanoimino-3,4-dihydro-1H-pyrido[2,3-d]pyrimidines (aryl-CI
DHPPMs) 3a–i以
甲醇钠为催化剂,
氰基
胍与芳香醛和
丙二腈以摩尔比(1:1:2)进行一锅四组分反应。这些新的多官能化芳基-CI
DHPPM 也是通过经典路线通过
氰基
胍与
丙二腈二聚体的相应亚芳基在相同条件下反应合成的。以同样的方式,
氰基
胍与
丙二腈二聚体的
靛红反应得到新的螺-
吡啶并[2,3-d]
嘧啶7。而使用具有给电子基团(羟基或
二甲氨基)的芳香醛得到4-
氨基-2 -芳基-6-甲氧基
吡啶-3,5-二甲腈5a,b。图形概要