Direct asymmetric aza Diels–Alder reaction catalyzed by chiral 2-pyrrolidinecarboxylic acid ionic liquid
作者:Xin Zheng、Yunbo Qian、Yongmei Wang
DOI:10.1016/j.catcom.2009.12.021
日期:2010.2
The utility of [EMIm][Pro] as an efficient catalyst for the one-pot direct asymmetric aza Diels–Alder reaction has been developed. A set of cyclic α,β-unsaturated ketones have been explored in up to 93% yield with up to >99/1 dr and >99% ee. Moreover, the catalytic system can be recycled and reused for six times without any significant loss of catalytic activity.
已开发出[EMIm] [Pro]作为单锅直接不对称氮杂Diels-Alder反应的有效催化剂的用途。已经研究了一组环状的α,β-不饱和酮,产率高达93%,dr大于99/1,ee大于99%。此外,该催化体系可以循环使用六次,而催化活性没有任何重大损失。