Catalytic Asymmetric Dearomative [3+2] Cyclisation of 1,4‐Quinone with 2,3‐Disubstituted Indoles
作者:Lvye Zhang、Jinjin Hu、Ruigang Xu、Shulei Pan、Xiaofei Zeng、Guofu Zhong
DOI:10.1002/adsc.201901035
日期:2019.12.3
A chiral phosphoric acid‐catalysed asymmetric dearomative [3+2] cyclisation for accessing enantioenriched benzofuroindolines with two vicinal tetrasubstituted carbon centres from readily available 1,4‐quinone and 2,3‐disubstituted indoles is developed. This protocol distinguishes itself by availability of the starting materials and mild reaction conditions in a stereoselective manner, which provides
开发了一种手性磷酸催化的不对称脱芳香性[3 + 2]环化反应,该环化反应可从容易获得的1,4-醌和2,3-二取代的吲哚中获得具有两个邻位四取代碳中心的对映体富集的苯并呋喃二氢吲哚。该方案以原料的可利用性和温和的反应条件(以立体选择性的方式)与众不同,这是对药学和生物活性的苯并呋喃[2,3-b]吲哚啉化合物不对称构建的现有方法的补充。