| 3,4,5-三甲氧基苯甲醛的合成工艺改进 |
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| 引用本文： | 戴勇.3,4,5-三甲氧基苯甲醛的合成工艺改进[J].盐城工学院学报(自然科学版),2007,20(4):1-3. |
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| 作者姓名： | 戴勇 |
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| 作者单位： | 盐城工学院,化学与生物工程学院,江苏,盐城,224003 |
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| 摘 要： | 用对羟基苯甲醛与溴反应生成3,5-二溴-4-羟基苯甲醛和HBr,3,5-二溴-4-羟基苯甲醛用氯化亚铜作催化剂,在DMF溶剂中与甲醇钠反应生成3,5-二甲氧基-4-羟基苯甲醛（丁香醛）,丁香醛在pH=9用硫酸二甲酯甲基化得到3,4,5-三甲氧基苯甲醛。反应中生成的HBr和NaBr氧化成溴供循环使用。
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| 关 键 词： | 3 4 5-三甲氧基苯甲醛 甲氧基化 甲基化 溴 回收 |
| 文章编号： | 1671-5322(2007)04-0001-03 |
| 修稿时间： | 2007年3月27日 |
Improvement of the Synthetic Process of 3,4,5-Trimethoxy Benzaldehyde |
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| DAI Yong.Improvement of the Synthetic Process of 3,4,5-Trimethoxy Benzaldehyde[J].Journal of Yancheng Institute of Technology(Natural Science Edition),2007,20(4):1-3. |
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| Authors: | DAI Yong |
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| Institution: | School of Chemistry and Biology,Yancheng Institute of Technology,Jiangsu Yancheng 224003,China |
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| Abstract: | P-hydroxy benzaldehyde reacts with bromine to form 3,5-bromo-4-hydroxy benzaldehyde,then fwthes reaction occurs with sodium methylate to obtain 3,5-methoxy-4-hydroxy benzaldehyde in the solution of DMF and employing cuprous chloride as catalyst.In the end,this compound is methylafed by bimethyl sulphade to synthesize 3,4,5-trimethoxy benzaldehyde at pH 9.The sodium bromine and hydrobromine in the reaction can circularly use. |
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| Keywords: | 3 4 5-trimethoxy benzaldehyde methoxylation methylation bromine reclaim |
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