Visible-Light-Mediated Intermolecular [2 + 2]-Cycloaddition Reaction of 3-Alkylideneindolin-2-one with Alkenes via Triplet Energy Transfer for the Synthesis of 3-Spirocyclobutyl Oxindoles
作者:Shao-Xian Shi、Huan-Huan Zhang、Yi-Lin Wang、Lin-Hong Jiang、Peng-Fei Xu、Yong-Chun Luo
DOI:10.1021/acs.orglett.3c01695
日期:2023.7.28
[2 + 2]-Cycloaddition is the most straightforward approach to the construction of cyclobutanes. In this paper, the intermolecular [2 + 2]-cycloaddition reaction of 3-alkylideneindolin-2-ones with alkenes was achieved. This reaction can be used in the synthesis of 3-spirocyclobutyl oxindoles, polycyclic oxindoles, and late stage modification of some drug molecules.
[2 + 2]-环加成是构建环丁烷最直接的方法。本文实现了3-亚烷基二氢吲哚啉-2-酮与烯烃的分子间[2+2]-环加成反应。该反应可用于3-螺环丁基羟吲哚、多环羟吲哚的合成以及一些药物分子的后期修饰。