Enantioselective and Regioselective Friedel-Crafts Alkylation of Pyrroles with Nitroalkenes Catalyzed by a Tridentate Schiff Base-Copper Complex
作者:Fengfeng Guo、Dalu Chang、Guoyin Lai、Tao Zhu、Shunshun Xiong、Sujing Wang、Zhiyong Wang
DOI:10.1002/chem.201102206
日期:2011.9.26
On a (pyr)role: A mild and highly efficient catalytic system has been developed for the asymmetric Friedel–Crafts alkylation of pyrroles with nitroalkenes (see scheme). High yields, and excellent enantioselectivities and regioselectivities were obtained for a broad range of substrates. The synthetic utility of this methodology and mechanistic studies involving a novel, negative, nonlinear effect are
在(吡咯)上:已开发出温和高效的催化体系,用于吡咯与硝基烯烃的不对称Friedel-Crafts烷基化反应(请参见方案)。对于宽范围的底物,获得了高产率,优异的对映选择性和区域选择性。还介绍了这种方法的综合效用和涉及新颖,负面,非线性效应的机理研究。