NaOH/Al_2O_3催化两种羟醛缩合反应的应用研究  

Application of NaOH/Al_2O_3 as Catalyst in Two Kinds Aldol Reation

作　　者：胡伟武[1] 陈红艳[1] 刘华俊[1] 

机构地区：[1]襄樊学院化学化工系,湖北襄樊441053

出　　处：《襄樊学院学报》2002年第5期55-57,共3页Journal of Xiangfan University

基　　金：湖北省高校科研青年发展项目(98B037);襄樊学院院级科研基金资助项目(2001 YA001)

摘　　要：在缩合反应中,用载体固体碱作催化剂有如下优点:反应条件温和,催化反应活性高,选择性强,后处理简单,产率高且无机载体可再生重复使用.在实验中,用NaOH-Al2O3催化苯甲醛与丙酮、乙醛与丙酮的反应,3小时后,产物的收率达85%以上,操作十分简便.Solid base as catalyst in aldol condensation has many advantages comparing with liquid base : Such as (1) the reaction condition was mild; (2) the catalytic activity was high ;(3) final treatment was easy ;(4) the yield was good and the supported reagent could be reused .During experiment , NaOH/Al2O3 as catalyst in the reactions of benzaldenyden and acetone or acetaldehyde and acetone , after 3 hours,the yield was beyond 85%.The operating was very easy.

关 键 词：NaOH-Al2O3 缩合反应 催化 

分 类 号：O643.32[理学—物理化学]