| MnO_(x/γ)-Al_2O_3催化加氢合成3,5-二甲氧基苯甲醛 |
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| 引用本文： | 徐宝峰,杨秀英.MnO_(x/γ)-Al_2O_3催化加氢合成3,5-二甲氧基苯甲醛[J].化学试剂,2003(6). |
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| 作者姓名： | 徐宝峰 杨秀英 |
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| 作者单位： | 临沂师范学院化学系，临沂师范学院化学系 山东 临沂 276005，山东 临沂 276005 |
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| 摘 要： | α将3,5-二羟基苯甲酸与硫酸二甲酯在碱性条件下反应生成3,5-二甲氧基苯甲酸甲酯,然后在高压下以MnOx/y-Al2O3为催化剂催化加氢得到3,5-二甲氧基苯甲醛。总收率81.7％。催化剂采用共沉淀法制备,Mn载量wMn=15.3％。
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| 关 键 词： | 3 5-二羟基苯甲酸 氧化锰 氧化铝 催化加氢 3 5-二甲氧基苯甲醛 |
Synthesis of 3,5-dimethoxybenzaldehyde by catalytic hydro- genation via MnOx/y-Al2O3 |
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| XU Bao-feng,YANG Xiu-
ying.Synthesis of 3,5-dimethoxybenzaldehyde by catalytic hydro- genation via MnOx/y-Al2O3[J].Chemical Reagents,2003(6). |
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| Authors: | XU Bao-feng YANG Xiu-
ying |
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| Abstract: | Synthetic method of 3,5-dimethoxybenzaldehyde from 3,5-dihydroxybenzoic acid was described in this paper. The catalysts MnOx/y-Al2O3 were prepared by means of co-precipitation method. Mn loading was 15. 3% in the catalysts. Methyl 3,5-dimethoxybenzoate was synthesized from 3,5-dihydroxybenzoic acid and dimethyl sulfate in alkaline condition, then, after catalytic hydrogenation under high pressure using MnOx/y-Al2O3 as catalyst, 3, 5-dimethoxybenzaldehyde was obtained with an overall yield of 81.7%. |
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| Keywords: | 3 5-dihydroxybenzoic acid aluminium oxide man-ganese oxide catalytic hydrogenation 3 5-dimethoxybenzal-dehyde |
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