| 对甲基苯甲醛的合成研究 |
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| 引用本文： | 熊正常,金宁人,胡惟孝,杨忠愚.对甲基苯甲醛的合成研究[J].浙江工业大学学报,1999,27(4):334-337. |
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| 作者姓名： | 熊正常 金宁人 胡惟孝 杨忠愚 |
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| 作者单位： | 浙江工业大学化工学院浙江杭州 310032 |
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| 摘 要： | 以对二甲苯为原料，经光溴化，水解，氧化得到对甲基苯甲醛。对三个步骤作了详细研究，得到合成对甲基苯甲醛的最佳反应条件，对二甲苯在光照回流下用液溴直接溴化，溴化产品用Ｎａ２ＣＯ３ 溶液在ｐＨ＝ ９ 时水解，然后用Ｈ２Ｏ２ ＋ ＨＢｒ 氧化得到目的产品。本方法原料易得，操作简单，收率较高。
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| 关 键 词： | 光溴化 对甲基苯甲醛 水解 氧化 |
| 文章编号： | 1006-4303(1999)04-0334-04 |
| 修稿时间： | 1999年6月20日 |
Study on synthesis of 4-methyl-benzaldehyde |
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| XIONG Zheng\|chang,JIN Ning\|ren,HU Wei\|xiao,YANG Zhong\|yu.Study on synthesis of 4-methyl-benzaldehyde[J].Journal of Zhejiang University of Technology,1999,27(4):334-337. |
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| Authors: | XIONG Zheng\|chang JIN Ning\|ren HU Wei\|xiao YANG Zhong\|yu |
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| Abstract: | The method of Photobromination to prepare p\|methyl\|benzaldehyde using the 1,4\|dimethyl benzene as starting materials consisted of three steps:bromination,hydrolysis and oxidation.The three steps of photobromination methods in preparing 4\|methyl\|benzaldehyde have all been studied in this articale. The optimum reaction condition to prepare 4\|methyl\|benzaldehyde was established.The 1,4\|dimethyl benzene is brominated under the condition of refluxing with liquid bromine without solvent.The brominated product is alkaline hydrolysised with Na\-2CO\-3 solution at pH=9,then oxidated by H\-2O\-2 HBr.This method has the advantage of avilable starting meterial,easy procedure and higher yield. |
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| Keywords: | photobromination p\|methyl\|benzalhyde hydrolysis oxidation |
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