Reactivity of 2-Aminothiazole and 2- or 6-Aminobenzothiazole Derivatives Towards the Triphenylbismuth Diacetate/Catalytic Copper Diacetate Phenylation System
作者:Abdellah Miloudi、Douniazad El-Abed、Gérard Boyer、Jean Pierre Finet、Jean Pierre Galy、Didier Siri
DOI:10.1002/ejoc.200300656
日期:2004.4
The copper diacetate catalysed reaction of triphenylbismuth diacetate with 6-aminobenzothiazole compounds afforded selectively the 6-phenylamino derivatives in good to high yields. A similar reaction with 2-aminothiazole or 2-aminobenzothiazole compounds gave mixtures of the monophenylated and diphenylated products 2-phenylaminothiazole and 2-(N-phenylamino)-3-N′-phenylthiazole derivatives, respectively
二乙酸铜催化的二乙酸三苯基铋与 6-氨基苯并噻唑化合物的反应选择性地以良好到高产率提供了 6-苯基氨基衍生物。与 2-氨基噻唑或 2-氨基苯并噻唑化合物的类似反应分别得到单苯基化和二苯基化产物 2-苯基氨基噻唑和 2-(N-苯基氨基)-3-N'-苯基噻唑衍生物的混合物,其中二苯基产物占优势。使用 SAM1/D 和 CHAIN 方法对 2-氨基苯并噻唑 - 铜 (III) 中间体的演化进行的半经验计算与实验结果具有良好的定性一致性。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)