Synthesis of 3,4,5-trisubstituted phenols via Rh(III)-catalyzed alkenyl C-H activation assisted by phosphonium cations. 2023

Yan Mao, and Wenxi Chen, and Changchang Li, and Lin Miao, and Yanfei Lin, and Fei Ling, and Zhangpei Chen, and Jinzhong Yao
College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China. lingfei@zjut.edu.cn.

An efficient method for the construction of various 3,4,5-trisubstituted phenol derivatives has been achieved via the Rh(III)-catalyzed coupling of phosphonium cations with internal alkynes. This protocol shows good substrate compatibility, as an array of structurally and electronically diverse phosphonium compounds react efficiently with up to 87% yield.

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