The Concise Synthesis of Unsymmetric Triarylacetonitriles via Pd-Catalyzed Sequential Arylation: A New Synthetic Approach to Tri- and Tetraarylmethanes
作者:Masakazu Nambo、Muhammad Yar、Joel D. Smith、Cathleen M. Crudden
DOI:10.1021/ol503213z
日期:2015.1.2
The selective synthesis of multiarylated acetonitriles via sequential palladium-catalyzed arylations of chloroacetonitrile is reported. The three aryl groups are installed via a Pd-catalyzed Suzuki–Miyaura cross coupling reaction followed by back-to-back C–H arylations to afford triarylacetonitriles in three steps with no over-arylation at any step. The triarylacetonitrile products can be converted
据报道,通过连续的钯催化的氯乙腈的芳基化反应,可以选择性合成多芳基化的乙腈。这三个芳基是通过Pd催化的Suzuki-Miyaura交叉偶联反应安装的,然后是背靠背的C-H芳基化反应,分三步提供三芳基乙腈,任何一步均不发生过度芳基化。三芳基乙腈产物可以转化为高度官能化的物质,包括四芳基甲烷。这种新策略可从简单易得的起始原料中快速获得各种不对称的三芳基和四芳基甲烷衍生物。