| 柠檬黄合成新工艺 |
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| 引用本文： | 鄢冬茂,李付刚.柠檬黄合成新工艺[J].染料与染色,2012,49(3):1-3,5. |
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| 作者姓名： | 鄢冬茂 李付刚 |
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| 作者单位： | 沈阳化工研究院有限公司,沈阳,110021 |
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| 摘 要： | 以苯肼-4-磺酸和顺丁烯二酸二甲酯为原料,经缩合、水解和空气氧化得到中间体1-(4′-磺酸基苯基)-3-羧基-5-吡唑啉酮,然后与对氨基苯磺酸的重氮盐偶合而得柠檬黄.对合成的1-(4 ′-磺酸基苯基)-3-羧基-5-吡唑啉酮结构进行了表征,对反应机理进行了讨论.产品柠檬黄经检测符合GB 4481.1-2010要求.
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| 关 键 词： | 柠檬黄 1-(4′-磺酸基苯基)-3-羧基-5-吡唑啉酮 顺丁烯二酸二甲酯 空气氧化 |
A New Synthesis Process for Tartrazine |
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| YAN Dong-mao
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LI Fu-gang.A New Synthesis Process for Tartrazine[J].Ranliao yu Ranse,2012,49(3):1-3,5. |
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| Authors: | YAN Dong-mao LI Fu-gang |
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| Affiliation: | (Shenyang Research Institute of Chemical Industry Co.,Ltd.,Shenyang 110021,Liaoning China) |
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| Abstract: | 1-(4′-Sulfophenyl)-3-carboxy-5-pyrazolone was synthesized from 4-sulfophenylhydrazine and dimethyl maleate by condensation,hydrolysis and air oxidation reaction;and then,tartrazine was obtained by coupling reaction of 1-(4′-sulfophenyl)-3-carboxy-5-pyrazolone and diazonium salt of p-aminobenzene sulfonic acid.The structure of 1-(4′-sulfophenyl)-3-carboxy-5-pyrazolone was characterized and reaction mechanism of it was discussed.Product tartrazine was qualified to GB 4481.1-2010. |
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| Keywords: | tartrazine 1-(4′-sulfophenyl)-3-carboxy-5-pyrazolone dimethyl maleate 4-sulfophenylhydrazine air oxidation |
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