TMSCl-Mediated Catalytic Carbocupration of Alkynoates: An Unprecedented and Remarkable Effect of Catalyst Loading on Highly Selective Stereochemical Induction via a TMS-Allenoate Intermediate
作者:Michael P. Jennings、Kailas B. Sawant
DOI:10.1002/ejoc.200400314
日期:2004.8
The TMSCl-mediated catalytic carbocupration of alkynoates has been investigated. It has been shown that catalyst loadings as low as 30 mol% readily allow for high yields and diastereoselectivities for a series of Grignard reagents. In addition, an unprecedented and remarkable effect of catalyst loading on stereochemical induction has been observed. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim
已经研究了 TMSCl 介导的炔酸酯催化碳化。已经表明,低至 30 mol% 的催化剂负载量很容易实现一系列格氏试剂的高产率和非对映选择性。此外,还观察到催化剂负载对立体化学诱导的前所未有的显着影响。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)