Copper-Catalyzed Synthesis of Benzo[<i>b</i>]thiophenes and Benzothiazoles Using Thiocarboxylic Acids as a Coupling Partner
作者:Hui Yu、Meishu Zhang、Yuzhe Li
DOI:10.1021/jo401353w
日期:2013.9.6
copper-catalyzed approach to benzo[b]thiophene and benzothiazole derivatives using thiocarboxylic acids as a sulfur source has been developed. In the presence of CuI and 1,10-phen, and n-Pr3N as the base, (2-iodobenzyl)triphenylphosphonium bromide and (2-iodophenylimino)triphenylphosphorane reacted smoothly with thiocarboxylic acids to give benzo[b]thiophene and benzothiazole derivatives in good yields via
已经开发出一种有效的铜催化方法,以硫代羧酸作为硫源,用于苯并[ b ]噻吩和苯并噻唑衍生物。在CuI和1,10-phen和n -Pr 3 N为碱的情况下,(2-碘苄基)三苯基溴化and和(2-碘苯基亚氨基)三苯基phosph与硫代羧酸平稳反应,生成苯并[ b ]噻吩和苯并噻唑通过顺序的Ullmann型C–S键耦合和Wittig缩合,可以得到高收率的衍生物。