Selective and efficient syntheses of phototoxic 2,2′:5′,2″-terthiophene derivatives bearing a functional substituent in the 3′- or the 5-position
作者:Renzo Rossi、Adriano Carpita、Maurizio Ciofalo、Vito Lippolis
DOI:10.1016/s0040-4020(01)96185-x
日期:1991.9
procedures have been developed to prepare on a medium scale several phototoxic 2,2′:5′,2″-terthiophene derivatives of general formula 2 and 3, which are characterized by a functional substituent in the 3′- or the 5-position.Most of these procedures, which are based on the construction of the 2.2′:5′,2″-terthiophene moiety and involve palladium-mediated carbon-carbon bond forming reactions, allow to
已经开发出有效和选择性的程序,以中等规模制备通式2和3的几种光毒性2,2':5',2''-对噻吩衍生物,其特征在于3'-或5中的功能性取代基这些步骤中的大多数是基于2.2':5',2''-叔噻吩部分的构建并涉及钯介导的碳-碳键形成反应,这些步骤都可以克服合成困难。从2,2':5',2''-对噻吩(1a)开始合成化合物2和3。