Chiral boron Lewis acid-catalyzed asymmetric synthesis of 4,5-dihydropyrrolo[1,2-a]quinoxalines
作者:Yuan Li、Yu-Han Su、De-Jun Dong、Zhao Wu、Shi-Kai Tian
DOI:10.1039/c3ra43248c
日期:——
B(OMe)3/(R)-BINOL (1 : 1, 10 mol%) and 4 Å molecular sieves, a range of 2-(1H-pyrrol-1-yl)anilines smoothly underwent a Pictet–Spengler-type reaction with aldehydes to give structurally diverse 4,5-dihydropyrrolo[1,2-a]quinoxalines in good to excellent yields and ee.
在存在B(OMe)3 /(R)-BINOL(1:1、10 mol%)和4Å分子筛的情况下,将一系列2-(1 H-吡咯-1-基)苯胺顺利进行Pictet -与醛的Spengler型反应,以良好的产率和ee产生结构多样的4,5-二氢吡咯并[1,2- a ]喹喔啉。