建立了一种以β-芳甲酰硫代酰胺(KTAs)和丙二腈为合成砌块合成噻唑啉衍生物的新方法.采用廉价的四正丁基碘化胺(TBAI)/叔丁基过氧化氢(TBHP)为催化氧化体系,在三乙胺存在下,室温反应1 h得到一系列4-氨基噻唑啉衍生物.该方法具有操作简便、反应条件温和、反应时间短、后处理简单、环境友好等特点.
A novel method based on reaction of β-ketothioamides(KTAs) with malononitrile to construct thiazolylidenes has been developed under metal-free conditions. This method used cheap tetrabutylammonium iodide(TBAI) as catalyst and t-butylhydroperoxide(TBHP) as oxidant in the presence of Et3N at room temperature for 1 h to synthesize a series of 4-aminothiazolylidene derivatives in good yields. This reaction has some advantages such as simple operation, mild reaction conditions, short reaction time, environmentally benign and simple work-up.