Role of Electron Transfer of Quinones in Hydroxylation of Phenol

Chem. J. Chinese Universities ›› 2001, Vol. 22 ›› Issue (5): 839.

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Role of Electron Transfer of Quinones in Hydroxylation of Phenol

MEN Yong, LIU Yu, LI Jing, YANG Xiang-Guang, WU Yue

Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China

Received:2000-04-24 Online:2001-05-24 Published:2001-05-24

Abstract

Abstract: It was found that at neutral pHthe hydroxylation reaction rate of phenol was accelerated with an increase of the amounts of 1,4-quinone (1,4-BQ). This acceleration was ascribed to the formation of semiquinone from 1,4-BQ. The semiquinone and 1,4-BQwere suggested to play a role of actual oxidant (electron transfer) in the catalytic cycle. With further reaction, most 1,4-BQwas converted into 1,4-hydroquinone (HQ) and the corresponding mechanism was proposed.

Key words: Phenol hydroxylation, Reaction mechanism, Quinone

CLC Number:

O643

TrendMD:

MEN Yong, LIU Yu, LI Jing, YANG Xiang-Guang, WU Yue . Role of Electron Transfer of Quinones in Hydroxylation of Phenol[J]. Chem. J. Chinese Universities, 2001, 22(5): 839.

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Role of Electron Transfer of Quinones in Hydroxylation of Phenol

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