Palladium(0)-Catalyzed Enantioselective CH Arylation of Cyclopropanes: Efficient Access to Functionalized Tetrahydroquinolines
作者:Tanguy Saget、Nicolai Cramer
DOI:10.1002/anie.201207959
日期:2012.12.14
Activated: The title reaction proceeds efficiently with 1 mol % of palladium and gives tetrahydroquinolines in excellent enantioselectivities (see scheme). The enantiodiscriminating concerted metalation–deprotonation step occurs via a rare seven‐membered palladacycle. The cyclopropyl‐substituted tetrahydroquinolines can be regioselectively and enantiospecifically reduced to chiral tetrahydrobenzoazepines
活化的:标题反应用1摩尔%的钯有效地进行,并得到具有优异对映选择性的四氢喹啉(参见方案)。对映体一致的金属化-去质子化步骤通过罕见的七元palladacycle发生。环丙基取代的四氢喹啉可以区域选择性和对映体特异性还原为手性四氢苯并a庚因。