间接电合成邻溴苯甲醛  

Synthesis of o-bromobenzaldehyde by Indirect Electrooxidation

作　　者：吴育飞[1] 胡瑞省[2] 刘彦肖[3] 

机构地区：[1]河北师范大学化学与材料科学学院,河北石家庄050016 [2]石家庄学院化工学院,河北石家庄050035 [3]河北行政学院工会,河北石家庄050031

出　　处：《河北师范大学学报（自然科学版）》2008年第2期221-223,共3页Journal of Hebei Normal University：Natural Science

基　　金：河北省科技攻关计划项目(02213005D)

摘　　要：采用间接电合成法,以Ce4+/Ce3+为媒质合成了邻溴苯甲醛.在隔膜电解槽中Ce3+电氧化的最佳条件是c(Ce3+)=0.6 mol/L,c(H2SO4)=0.5 mol/L,电流密度200 A/m2,电量1.0 F/mol,Ce4+的电解收率90.9%;槽外合成邻溴苯甲醛的最佳条件是n(Ce4+)∶n(邻溴甲苯)=4∶2,c(H2SO4)=0.5 mol/L,反应温度80℃,邻溴苯甲醛反应收率82.3%.The Ce^3＋ sulfuric acid solution is electrooxided to Ce^4＋ in a membrane electrolytic cell by indirect electrooxidation method. The optimum conditions of electrolysis are as fellows：Ce^3＋ concentration is 0.6 mol/L, sulfuric acid concentration is 0.5 mol/L, current density is 200 A/m^2, electric quantity is 1.0 F/mol. On the condition electrolytic yield is 90.9 %. The optimum conditions of outside cell reaction are as fellows： n （Ce^4＋ ） ： n （ o- Br-Ph-CH3） = 4：2, sulfuric acid concentration is 0.5 mol/L, temperature is 80 ℃. The reaction yield of o-bromobenzahyde is 82.3 %.

关 键 词：邻溴苯甲醛 邻溴甲苯 间接电合成 

分 类 号：O621.3[理学—有机化学]