第 45 卷第 6 期 | | Vol. 45 No. 6 | 2015 年 12 月 | Dec 2015 |
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所属栏目:医药及中间体
2-(E)-(取代苯亚甲基)环己酮的合成工艺研究 |
王 强,孙纲春,李志成,齐月恒
(河南工业大学 化学化工学院,河南 郑州 450001) |
摘 要:采用异香兰醛和环己酮为原料,以乙醇为溶剂,在哌啶催化作用下羟醛缩合合成了姜黄素类抗癌药物重要中间体2-(E)-(3-羟基-4-甲氧基苯亚甲基)环己酮,通过1H NMR对产品的结构进行确证。并对反应条件进行了优化,优化条件为n(异香兰醛)∶n(环己酮)=1∶3,催化剂为哌啶,且质量为环己酮质量的20%,常压下70℃混合反应,反应结束后通过干法柱层析纯化,2-(E)-(3-羟基-4-甲氧基苯亚甲基)环己酮的反应收率达60.5%。通过扩展实验可知同样适用于香兰醛、3,4,5-三甲氧基苯甲醛等芳醛。 |
关键词:2-(E)-(取代苯亚甲基)环己酮;Claisen-Schimid羟醛缩合反应;芳醛;姜黄素类似物 |
中图分类号:TQ244.3 文献标识码:A 文章编号:1009-9212(2015)06-0026-03 |
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Synthesis of 2(E)-(Benzylidene)cyclohexanones |
WANG Qiang, SUN Gang-chun, LI Zhi-cheng, QI Yue-heng
(Collage of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China) |
Abstract:(E)-2-(3-Hydroxy-4-methoxybenzylidene)cyclohexanone was synthesized from aldol condensation of 3-hydroxy-4-methoxybenzaldehyde and cyclohexanone using piperidine as catalyst in ethanol. Its structure was characterized by 1H NMR. The experimental results showed that the optimal molar ratio of 3-hydroxy-4-methoxybenzaldehyde to cyclohexanone was 1:3; the optimal dosage of piperidine was 20% of cyclohexanone; the optimal temperature was 70℃. The target product was obtained in a yield of 60.5%. This method could also be applied in the preparation of Vanillin, 3,4,5-trimethoxybenzaldehyde and other aromatic benzaldehydes. |
Key words:(E)-2-(3-hydroxy-4-methoxybenzylidene)cyclohexanone; Claisen-Schimidt aldol condensation; aromatic benzaldehydes; curcumin analogs |
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基金项目:河南省重点科技攻关计划(102102210027,092102210007),河南省教育厅自然研究科学计划(2010A150007)。
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作者简介:王 强(1990-),男,河南许昌人,硕士研究生,主要从事药物有机合成工作。
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联 系 人: 孙纲春,教授,硕士生导师,主要从事药物有机合成工作(E-mail:952900738@qq.com)。
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收稿日期:2015-12-01
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