A number of previously undescribed derivatives of 2-amino-5-(2-aryl-2-oxoethyl)thiazol-4(5H)-one containing electron-donating substituents in the aromatic ring were synthesized by the reaction of (E)-4-aryl-4-oxobut-2-enoic acids with thiourea. Reduction of the reaction products with NaBH4 yielded diastereomeric alcohols, whereas bromination in AcOH was accompanied by elimination of HBr and the formation
通过(E)-的反应,合成了许多先前未描述的2-
氨基-5-(2-芳基-2-氧代乙基)
噻唑-4(5H)-在芳族环中含有给电子取代基的衍
生物。4-芳基-4-氧代丁-2-烯酸与
硫脲。用NaBH 4还原反应产物可生成非对映异构醇,而在AcOH中
溴化则伴随着HBr的消除和(Z)-2-
氨基-5-(2-芳基-2-氧代亚乙基)
噻唑-4(5)的形成。H)-一个。