An Asymmetric Dehydrogenative Diels–Alder Reaction for the Synthesis of Chiral Tetrahydrocarbazole Derivatives
作者:Xiang Wu、Hai-Jie Zhu、Shi-Bao Zhao、Shu-Sen Chen、Yun-Fei Luo、You-Gui Li
DOI:10.1021/acs.orglett.7b03251
日期:2018.1.5
An asymmetric dehydrogenative Diels–Alder reaction of 2-methyl-3-phenylmethylindoles and α,β-unsaturated aldehydes has been established. The successful in situ generation of the indole ortho-quinodimethane intermediate and the iminium activation of enals are the keys to success, providing various tetrahydrocarbazole derivatives with up to >99% ee.
已经建立了2-甲基-3-苯基甲基吲哚和α,β-不饱和醛的不对称脱氢Diels-Alder反应。成功地原位产生吲哚邻二喹甲烷甲烷中间体和对苯二甲亚胺的活化是成功的关键,它提供了各种ee> 99%的四氢咔唑衍生物。