第 44 卷第 6 期Vol. 44 No. 6
2014 年 12 月Dec 2014

所属栏目:有机合成原料

酸性离子液体催化aldol反应研究
秦永华,史海波,田宗明 (浙江医药高等专科学校, 浙江 宁波 315100)
摘 要:以甲酰胺和氯丙酮等为原料合成了离子液体4-甲基-3-丁基噻唑硫酸氢盐。以aldol反应为探针,探究了离子液体催化苯甲醛与丙酮的缩合反应,并对催化剂用量、醛酮比、反应时间和催化剂重复利用等进行了考察。优化工艺条件为:n(苯甲醛)∶n(丙酮)=1.0∶1.8,催化剂用量3%(n/n),反应时间1.5 h,苄叉丙酮的收率达81.2%,催化剂重复使用5次仍可保持较高催化效果。
关键词:离子液体;aldol反应;噻唑;苄叉丙酮
中图分类号:TQ244  文献标识码:A  文章编号:1009-9212(2014)06-0052-03
Study on the Aldol Reaction of Benzaldehyde and Acetone Catalyzed by 4-Methyl-3-butylthiazole Bisulfate
QIN Yong-hua, SHI Hai-bo, TIAN Zong-ming (Zhejiang Pharmaceutical College, Ningbo 315100, China)
Abstract:4-Methyl-3-butylthiazole bisulfate was synthesized from formamide. This acidic ionic liquid was used as the catalyst for aldol reaction. The amount of catalyst, the aldehyde/ketone ratio, the reaction time and the reproducibility of catalytic ability were studied on the condensation reaction between benzaldehyde and acetone. Best result with 81.2% yield was obtained under the conditions of aldehydes/ketones ratio of 1.0∶1.8, the amount of catalyst of 3% and the reaction time of 1.5 hrs. The catalyst can be reused for 5 times.
Key words:ionic liquid; aldol reaction; thiazole; benzylideneacetone
基金项目: 浙江省教育厅科研项目(Y200909511),浙江省教育厅科研项目(Y201122555),宁波市自然科学基金项目(2014A610210),浙江医药高等专科学校校级课题(ZPCSR2011006)资助。
作者简介:秦永华(1980-),男,安徽宣城人,讲师,研究方向:有机化学(654162@163.com)。
收稿日期: 2014-12-1