以四碳不饱和酸为原料成对电合成1,2-二醇类化合物  

Paired Electrosynthesis of 1,2-Diol Equivalents

作　　者：顾登平[1] 申凤娟[1] 焦丽芳[1] 李玮[2] 

机构地区：[1]河北师范大学化学系,河北石家庄050016 [2]日本东京工业大学综合理工学院电子化学专攻系

出　　处：《精细化工》2001年第4期208-211,共4页Fine Chemicals

摘　　要：建立了一种成对电合成体系 ,以VO(acac) 2 VO(acac) 2 OOH为媒质 ,间接氧化烯烃得到相应的环氧化物 ;阳极以Br2 Br- 为媒质 ,间接氧化烯烃成邻溴代醇。马来酸环氧化反应总电流效率高达 145 %A system of paired electrosynthesis of 1,2 diol equivalents was established.H\-2O\-2 generated at cathode was catalyzed by bis(acetylacetonato)vanadyl/bis(acetylacetonato)pervanadyl[VO(acac)\-2/VO(acac)\-2OOH] redox mediator to convert olefin into epoxide. At anode, olefin was electrooxidized to form bromohydrin.By combining these two systems,paired electrosynthesis of 1,2 diol equivalents can be realized.In this work,maleic acid was selected as a typical starting compound.Under the optimum conditions,some other olefins were also oxidized.The cathodic epoxidation of styrene in a cosolvent system was investigated.Polystyrene supported VO(acac)\-2 was prepared and its catalytic activity was evaluated in an aqueous electrolyte.

关 键 词：1 2二醇类化合物 成对电合成 VO(acac)2/VO(acac)2OOH媒质 

分 类 号：TQ150.1[化学工程—电化学工业]