A Mild Highly Efficient and Green Protocol for Preparation of N-alk-2′-Enoyl Cyclic Imides Using Basic Ionic Liquid [bmIm]OH as Base and Reaction Medium
作者:Yongjiang Wang、Jianwei Mao、Wen Pei
DOI:10.3184/030823408x356305
日期:2008.10
An efficient and green protocol for the preparation of N-alk-2′-enoyl cyclic imides at room temperature was developed using a basic ionicliquid, 1-methyl-3-butylimidazolium hydroxide, [bmIm]OH, as a base and a reactionmedium.
Bifunctional Brønsted Base Catalyzed [3 + 3] Annulations of Indolin-2-imines and α,β-Unsaturated Imides: An Enantioselective Approach to α-Carbolinones
作者:Lin Chen、Xiang Zhang、Ke-Jin Shi、Hai-Jun Leng、Qing-Zhu Li、Yu Liu、Jiang-Hong Li、Qi-Wei Wang、Jun-Long Li
DOI:10.1021/acs.joc.0c00957
日期:2020.8.7
attracted considerable attention from the synthesis community, and the development of effective catalysis for this target is in great demand. Here, a bifunctional Brønsted base catalyzed asymmetric [3 + 3] cyclization of indolin-2-imines and α,β-unsaturated N-acylated succinimides was developed by using the strategy of noncovalent bonding catalysis. With this organocatalytic protocol, a variety of tet