Various ethyl 4-alkyl(aryl)thioimidazole-5-carboxylates have been synthesized by the reaction of ethyl valeramidocyanoacetate with a variety of alkyl(aryl) thiols in the presence of triethylamine and subsequent phosphorus pentachloride/4-dimethylaminopyridine (DMAP) mediated cyclization of the acyclic intermediates.
通过戊酰胺
氰乙酸乙酯与多种烷基(芳基)
硫醇在
三乙胺存在下发生反应,然后在
五氯化磷/4-二甲
氨基吡啶(
DMAP)介导下环化无环中间体,合成了各种 4-烷基(芳基)
硫咪
唑-5-羧酸乙酯。