Manganese-Catalyzed Directed Methylation of C(sp<sup>2</sup>)–H Bonds at 25 °C with High Catalytic Turnover
作者:Takenari Sato、Takumi Yoshida、Hamad H. Al Mamari、Laurean Ilies、Eiichi Nakamura
DOI:10.1021/acs.orglett.7b02778
日期:2017.10.6
scope, using MeMgBr, a catalytic amount of MnCl2·2LiCl, and an organic dihalide oxidant. The reaction features ambient temperature, low catalyst loading, typically 1%, high catalytic turnover reaching 5.9 × 103, and no need for an extraneous ligand and illustrates a unique catalytic use of simple manganese salts for C–H activation, which so far has relied on catalysis by manganese carbonyls.
我们在这里报告了使用MeMgBr,催化量的MnCl 2 ·2LiCl和有机二卤化物氧化剂进行的锰催化的CH甲基化反应,具有较大的底物范围。该反应具有环境温度,低催化剂负载(通常为1%),高催化转化率(达到5.9×10 3),不需要外来配体的特点,并说明了简单的锰盐在C–H活化中的独特催化用途,到目前为止,该反应已具有依赖于羰基锰的催化作用。