| 无溶剂条件下肉桂醛自身氧化还原反应的研究 |
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| 引用本文： | 田大年,丁润梅,刘万毅.无溶剂条件下肉桂醛自身氧化还原反应的研究[J].石油化工应用,2007,26(1):20-22. |
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| 作者姓名： | 田大年 丁润梅 刘万毅 |
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| 作者单位： | 1. 宁夏医学院,宁夏,银川,750004
2. 宁夏大学化学化工学院,宁夏,银川,750021 |
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| 摘 要： | 研究了在无溶剂条件下,通过研磨法,在碱、氧化铝或碱、氧化硅作用下,肉桂醛发生自身氧化还原反应的规律。比较了氢氧化钾、氢氧化钠、碳酸钠、醋酸钠等不同强度碱的催化行为,其中以氢氧化钠为最佳。优化出了最佳实验条件:即醛碱(固体氢氧化钠)摩尔比为2:3,温度在30℃左右,反应时间5min时,肉桂醛的转化率可达95％,肉桂酸和肉桂醇的收率分别为93％, 88．5％。本方法具有碱用量少,产物收率高,反应速度快,节约溶剂,降低成本,操作简洁等优点。
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| 关 键 词： | 肉桂醛 无溶剂岐化反应 研磨法 肉桂酸 肉桂醇 |
| 文章编号： | 1673-5285(2007)01-0020-03 |
| 修稿时间： | 2006年12月8日 |
Cannizzaro Reaction of the Cinnamon Aldehyde under Solvent- Free Condition |
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| TIAN Danian,DING Runmei,LIU Wanyi.Cannizzaro Reaction of the Cinnamon Aldehyde under Solvent- Free Condition[J].Petrochemical Industry Application,2007,26(1):20-22. |
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| Authors: | TIAN Danian DING Runmei LIU Wanyi |
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| Abstract: | Cannizzaro reaction of the cinnamon aldehyde under solvent - free condition through grinding was studied. The catalytic ability of KOH, NaOH, Na2CO3 and NaAc were examined, and founded that the NaOH is the best catalyst. Then the factors of the effects reaction are investigated. The results show that optimum conditions with 2:3 molar ratio of NaOH and cinnamon aldehyde; the reaction time is within 5 min. under about 30℃;the conversion ratio of the cinnamon aldehyde is 95% , the yield of cinnamon acid is 93% and cinnamon alcohol is 88. 5%. This facile new method is effectively, fast, and low cost. |
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| Keywords: | cinnamon aldehyde cannizzaro reaction solvent - free grinding |
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