Formal [1 + 2 + 3] Annulation: Domino Access to Carbazoles and Indolocarbazole Alkaloids
作者:Yang Men、Zhongyan Hu、Jinhuan Dong、Xianxiu Xu、Bo Tang
DOI:10.1021/acs.orglett.8b02266
日期:2018.9.7
A new formal [1 + 2 + 3] annulation of o-alkenyl arylisocyanides with α, β-unsaturated ketones under metal-, base-, and acid-free conditions is disclosed. This domino reaction provides a general protocol for the efficient and practical synthesis of a wide range of carbazole derivatives from readily available starting materials in a single operation. Furthermore, this methodology was used as the key
公开了在无金属,无碱和无酸条件下具有α,β-不饱和酮的邻链烯基芳基异氰化物的新的正式[1 + 2 + 3]环化反应。该多米诺反应为在一次操作中从容易获得的起始原料高效有效地合成多种咔唑衍生物提供了一个通用方案。此外,该方法被用作吲哚并咔唑生物碱阿奇黄素A和消旋素B的无保护基合成的关键步骤。