醌类化合物在苯酚羟化反应中的电子传递作用  

Role of Electron Transfer of Quinones in Hydroxylation of Phenol

作　　者：门勇[1] 刘钰[1] 李静[1] 杨向光[1] 吴越[1] 

机构地区：[1]中国科学院长春应用化学研究所,长春130022

出　　处：《高等学校化学学报》2001年第5期839-840,共2页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金! (批准号 :2 9973 0 41);中国科学院院长基金!特别支持项目资助

摘　　要：It was found that at neutral pH the 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 BQ were suggested to play a role of actual oxidant (electron transfer) in the catalytic cycle. With further reaction, most 1,4 BQ was converted into 1,4 hydroquinone (HQ) and the corresponding mechanism was proposed.It was found that at neutral pH the 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 BQ were suggested to play a role of actual oxidant (electron transfer) in the catalytic cycle. With further reaction, most 1,4 BQ was converted into 1,4 hydroquinone (HQ) and the corresponding mechanism was proposed.

关 键 词：苯酚 羟化 反应机理 苯醌 羟化反应 电子传递作用 

分 类 号：O625.312[理学—有机化学]