K_2CO_3/Al_2O_3催化丙醛缩合制备2-甲基-2-戊烯醛  

Condensation preparation of 3-methyl-2-pentenal from propionaldehyde catalyzed by K_2CO_3/Al_2O_3

作　　者：翁文[1] 蔡萍双[1] 郑美嫦[1] 林凤[1] 陈友遵[1] 

机构地区：[1]漳州师范学院化学与环境科学系,福建漳州363000

出　　处：《应用化工》2007年第9期877-878,共2页Applied Chemical Industry

基　　金：福建省教育厅项目(JA05301)

摘　　要：制备了K2CO3/Al2O3固体碱催化剂,并将其用于催化丙醛缩合合成2-甲基-2-戊烯醛。当反应温度为85℃,反应时间1 h,溶剂乙醇10 mL,丙醛用量9.4 mL,催化剂用量为1.0 g时,2-甲基-2-戊烯醛的产率可达71.2%。固体K2CO3不具备催化性能。Solid base catalyst, K2CO3/Al2O3 was prepared and applied in the condensation preparation of 2-methyl-2-pentenal from propionaldehyde. When the reaction temperature was 85 ℃, reaction time 1 h, ethanol 10 mL,the amount of propionaldehyde 9.4 mL and the catalyst 1.0 g,the yield of 2-methyl-2- pentenal was 71.2%. Pure K2CO3 did not possess catalytic ability to the contrary.

关 键 词：2-甲基-2-戊烯醛 固体碱催化剂 K2CO3/Al2O3 缩合反应 丙醛 

分 类 号：O622.4[理学—有机化学]