Stereospecific Suzuki−Miyaura Coupling of Chiral α-(Acylamino)benzylboronic Esters with Inversion of Configuration
作者:Toshimichi Ohmura、Tomotsugu Awano、Michinori Suginome
DOI:10.1021/ja106632j
日期:2010.9.29
invertive B-alkyl Suzuki-Miyaura coupling has been achieved. The coupling of enantioenriched α-(acylamino)benzylboronic esters with aryl bromides and chlorides took place efficiently in toluene at 80 °C in the presence of Pd(dba)(2) (5 mol %), XPhos (10 mol %), K(2)CO(3) (3 equiv), and H(2)O (2 equiv). The reaction proceeded with inversion of configuration to give diarylmethanamine derivatives in high
已经实现了第一个反向 B-烷基 Suzuki-Miyaura 偶联。在 Pd(dba)(2) (5 mol %)、XPhos (10 mol %)、K 存在下,在 80 °C 的甲苯中,对映体富集的 α-(酰氨基)苄基硼酸酯与芳基溴化物和氯化物的偶联发生(2)CO(3)(3当量)和H(2)O(2当量)。该反应以构型反转进行,以高产率得到二芳基甲胺衍生物,对映体过量保守性高。