Photoinduced [3+2] Annulation of Alkene with o-Iodoanilines: An Expedient Approach to Indolines

Wujiong Xia,Xinxin Zhao,Lin Guo,Chao Yang

Synthesis（2020）

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摘要

A highly regioselective [3+2] cyclization of alkenes with 2-iodoanilines under the irradiation of UV light is described. This general, metal-free strategy facilitates the direct preparation of 2-mono-/disubstituted indolines as well as spiroindolines through alkene carboamination in one step. Mechanistic studies suggested that the photochemical protocol proceeded via a radical pathway.

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关键词

[3+2] cyclization, alkene carboamination, indolines, spiroindolines, radical pathway

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