作者:Zhizhou Liu、Dragoslav Vidović
DOI:10.1021/acs.joc.8b00434
日期:2018.5.4
CH(CMe)2(N-C6H3-iPr2)2; Tf = O2SCF3; ArCl = 3,5-Cl2-C6H3) has been identified as an efficient Lewis acid catalyst for Michael additions involving numerous electron-rich (hetero)aromatic substrates and several α,β-unsaturated carbonyl compounds. In a vast majority of the attempted Michael reactions our catalytic system was significantly superior over the currently used methods for the same transformations
β-二甲双胍负载的双硫铝铝络合物(Dip LAl(OTf)2 ·Na [BAr Cl 4 ]; Dip L = CH(CMe)2(NC 6 H 3 - i Pr 2)2 ; Tf = O 2 SCF 3; Ar Cl = 3,5-Cl 2 -C 6 H 3)已被证实是迈克尔加成反应的有效路易斯酸催化剂,涉及许多富电子(杂)芳族底物和几种α,β-不饱和羰基化合物。在绝大多数尝试的迈克尔反应中,就反应时间和温度,催化剂负载量,分离的产物收率和/或选择性而言,对于相同的转化,我们的催化体系明显优于目前使用的方法。