3-碘-苯并吡喃-4-酮与2-硫代嘧啶类的Michael加成反应

Michael addition of 3 iodo 4 oxo 4H 1 benzopyran 4 one with 2 thio pyrimidines

报道了具有α，β－不饱和羰基的３－碘－苯并吡喃－４－酮（１）与２－硫代嘧啶发生Ｍｉｃｈａｅｌ加成反应，合成出４个２－（２－羟苯甲酰基）－５－氧－５Ｈ－噻唑并［２，３－ｂ］嘧啶的衍生物。这些化合物结构经核磁共振光谱、紫外吸收光谱、红外光谱和元素分析均予以证实。

Four new 2 (2 hydroxybenzoyl) 5 oxo 5 H thiazo[2,3 b ] pyrimidine derivatives have been synthesized by Michael reaction of the 3 iodo 4 oxo 4 H 1 benzopyran with 2 thio pyrimidines. The structures of all these prepared compounds were characterized by elemental analysis,UV,IR,NMR and MS spectra.