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.