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

所屬欄目:有機合成原料

酸性離子液體催化aldol反應研究
秦永華,史海波,田宗明 (浙江醫藥高等專(zhuān)科學(xué)校, 浙江 寧波 315100)
摘 要:以甲酰胺和氯丙酮等為原料合成了離子液體4-甲基-3-丁基噻唑硫酸氫鹽。以aldol反應為探針,探究了離子液體催化苯甲醛與丙酮的縮合反應,并對催化劑用量、醛酮比、反應時(shí)間和催化劑重復利用等進(jìn)行了考察。優(yōu)化工藝條件為:n(苯甲醛)∶n(丙酮)=1.0∶1.8,催化劑用量3%(n/n),反應時(shí)間1.5 h,芐叉丙酮的收率達81.2%,催化劑重復使用5次仍可保持較高催化效果。
關(guān)鍵詞:離子液體;aldol反應;噻唑;芐叉丙酮
中圖分類(lèi)號:TQ244  文獻標識碼:A  文章編號: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
基金項目: 浙江省教育廳科研項目(Y200909511),浙江省教育廳科研項目(Y201122555),寧波市自然科學(xué)基金項目(2014A610210),浙江醫藥高等專(zhuān)科學(xué)校校級課題(ZPCSR2011006)資助。
作者簡(jiǎn)介:秦永華(1980-),男,安徽宣城人,講師,研究方向:有機化學(xué)(654162@163.com)。
收稿日期: 2014-12-1
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