作者:Francisco González-Bobes、Michaël D. B. Fenster、Susanne Kiau、Laxma Kolla、Sergei Kolotuchin、Maxime Soumeillant
DOI:10.1002/adsc.200800027
日期:2008.4.7
α′-tetramethyl-1,3-benzenedipropanoate] to catalyze the cyclopropanation of a wide range of alkenes with malonate-derived carbenoids under mild reaction conditions is reported in this communication. The experimental protocol is remarkably simple, uses readily accessible and stable dimethyl diazomalonate with very low catalyst loading. More importantly, the alkene is employed as a limiting reagent.
α,α,α',α'-四甲基-1,3-苯二丙酸酯[Rh 2(esp)2;据报道,esp =α,α,α',α'-四甲基-1,3-苯二丙酸酯]在温和的反应条件下与丙二酸酯衍生的类胡萝卜素催化多种烯烃的环丙烷化反应。实验方案非常简单,使用容易获得且稳定的重氮丙二酸二甲酯,催化剂的负载量非常低。更重要的是,烯烃被用作限制试剂。