Volume 129, Issue 28 pp. 8308-8312
Zuschrift

Catalytic Electrophilic Alkylation of p-Quinones through a Redox Chain Reaction

Xiao-Long Xu

Xiao-Long Xu

School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Pudong, Shanghai, 201210 China

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Dr. Zhi Li

Corresponding Author

Dr. Zhi Li

School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Pudong, Shanghai, 201210 China

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First published: 22 May 2017
Citations: 10

Abstract

Allylation and benzylation of p-quinones was achieved through an unusual redox chain reaction. Mechanistic studies suggest that the existence of trace hydroquinone initiates a redox chain reaction that consists of a Lewis acid catalyzed Friedel–Crafts alkylation and a subsequent redox equilibrium that regenerates hydroquinone. The electrophiles could be various allylic and benzylic esters. The addition of Hantzsch ester as an initiator improves the efficiency of the reaction.

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