Transition-metal-free oxindole synthesis: quinone–K₂CO₃ catalyzed intramolecular radical cyclization

Shiyuan Wu,Qiuting Zhao, Chao Wu,Chengming Wang,Hao Lei

Organic Chemistry Frontiers（2022）

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摘要

A highly efficient transition-metal-free radical cyclization route for the synthesis of oxindoles was developed, using the readily available 9,10-phenanthrenequinone (PQ) catalyst together with K2CO3.

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Transition-metal-free oxindole synthesis: quinone–K2CO3 catalyzed intramolecular radical cyclization

Transition-metal-free oxindole synthesis: quinone–K₂CO₃ catalyzed intramolecular radical cyclization