作者:David I. Chai、Mark Lautens
DOI:10.1021/jo900053b
日期:2009.4.17
A highly efficient water-accelerated palladium-catalyzed reaction of gem-dibromoolefins with a boronic acid via a tandem Suzuki−Miyaura coupling and direct arylation is reported. A wide range of aryl, alkenyl, and alkyl boronic acids, as well as a variety of substitution patterns on the phenyl ring, are tolerated. Additionally, mechanistic studies were conducted to ascertain the order of the couplings
据报道,通过串联的Suzuki-Miyaura偶联和直接芳基化反应,宝石-二溴代烯烃与硼酸进行了高效的水促进钯催化反应。宽范围的芳基,烯基和烷基硼酸,以及苯环上的各种取代方式都可以使用。此外,进行了机械研究,以确定耦合的顺序以及水的作用。这项研究的结果表明,主要途径是Suzuki-Miyaura偶联/直接芳基化序列,水加速了Pd(0)的形成和Suzuki-Miyaura偶联。