碘催化合成香兰素缩1,2-丙二醇  

Synthesis of vanillin 1,2-propylene glycol acetal catalyzed by iodine

作　　者：王永兰[1] 薄会颖[1] 王宏社[1] 薄会颖 

机构地区：[1]宝鸡教育学院,陕西宝鸡721004 [2]宝鸡文理学院化学化工学院,陕西宝鸡721013

出　　处：《化学工程师》2013年第6期15-17,共3页Chemical Engineer

基　　金：陕西省教育厅专项科学研究项目(12JK0615);宝鸡市科技计划项目(12KG8-3);宝鸡文理学院校级重点项目(ZK1053)

摘　　要：以单质碘为催化剂,香兰素和1,2-丙二醇经缩合反应合成了香兰素缩1,2-丙二醇。考察了醛醇物质的量比、催化剂用量、反应温度和反应时间对产品收率的影响。实验表明,较佳反应条件为:当香兰素的用量为0.1mol,1,2-丙二醇的用量为0.18mol,即n(香兰素)∶n(1,2-丙二醇)=1∶1.8,催化剂用量1.2g,反应温度60℃,反应时间20min,香兰素缩1,2-丙二醇的收率达91.3%以上。Vanillin 1,2-propylene glycol acetal was synthesized through the condensation of vanillin with 1,2propylene glycol using iodine as a catalyst.The effects of the molar ratio of reactant,the amount of catalyst,reac tion temperature and reaction time on the yield of product were discussed.The results showed that the optimized reaction conditions are as follows： the molar ratio of vanillin（0.1mol）to 1,2-propylene glycol（0.18mol）is 1∶1.8;the amount of catalyst is 1.2g,reaction temperature is 60 ℃ and the reaction time is 20 min.Under the optimum conditions mentioned above,the yield of vanillin 1,2-propylene glycol acetal reached more than 91.3%.

关 键 词：碘 香兰素缩1 2-丙二醇 催化 合成 

分 类 号：TQ225[化学工程—有机化工]