Catalytic C−H Bond Stannylation: A New Regioselective Pathway to C−Sn Bonds via C−H Bond Functionalization
作者:Meghan E. Doster、Jillian A. Hatnean、Tamara Jeftic、Sunjay Modi、Samuel A. Johnson
DOI:10.1021/ja105588v
日期:2010.9.1
ubiquitous Stille coupling reaction utilizes Sn-C bonds and is of great utility to organic chemists. Unlike the B-C bonds used in the Miyaura-Suzuki coupling reaction, which are readily obtained via direct borylation of C-H bonds, routes to organotin compounds via direct C-H bond functionalization are lacking. Here we report that the nickel-catalyzed reaction of fluorinated arenes and pyridines with vinyl
无处不在的 Stille 偶联反应利用 Sn-C 键,对有机化学家非常有用。与 Miyaura-Suzuki 偶联反应中使用的 BC 键不同,BC 键很容易通过 CH 键的直接硼酸化获得,但缺乏通过直接 CH 键官能化获得有机锡化合物的途径。在这里,我们报告氟化芳烃和吡啶与乙烯基锡烷的镍催化反应没有通过 CF 活化提供预期的乙烯基化合物,而是通过 CH 官能化提供新的 Sn-C 键,同时失去乙烯。这种机制为将 CH 键直接转化为碳-杂原子键提供了一种新的出乎意料的方法。