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2,5-吡啶二甲酸的合成研究
引用本文:王兴利,于洪艳.2,5-吡啶二甲酸的合成研究[J].当代化工,2012(11):1192-1194.
作者姓名:王兴利  于洪艳
作者单位:台州市万鑫化学工程技术开发有限公司;浙江沙星医药化工有限公司
摘    要:用6-甲基炯酸为原料,高锰酸钾为氧化剂,在水相的条件下合成了2,5-吡啶二甲酸。考察了氧化剂种类、原料与氧化剂配比、反应用水的量以及后处理对产品收率和纯度的影响。结果表明,用高锰酸钾为氧化剂,高锰酸钾与6-甲基烟酸的摩尔比为3;反应用水的质量为原料质量的6倍;用酸碱精制法对产品粗品进行精制,在此条件下产品的最终纯度达到99.5%以上,总收率达到70%以上。

关 键 词:6-甲基烟酸  高锰酸钾  2  5-吡啶二甲酸

Study on Synthesis of 2,5-Pyridine Dicarboxylic Acid
WANG Xing-li,YU Hong-yan.Study on Synthesis of 2,5-Pyridine Dicarboxylic Acid[J].Contemporary Chemical Industry,2012(11):1192-1194.
Authors:WANG Xing-li  YU Hong-yan
Affiliation:1.Taizhou Wanxin Chemical Engineering Technology Development Co.,Ltd.,Zhejiang Taizhou 318000,China;2.Zhejiang Shaxing Pharm.& Chem.Co.,Ltd.,Zhejiang Taizhou 317021,China)
Abstract:2,5-Pyridine dicarboxylic acid was prepared by the reaction of 6-methylnicotinic acid with potassium permanganate in the presence of water. The effect of oxidant kinds, amount of water, ratio of 6-methylnicotinic acid to potassium permanganate on yield and purity of the product was investigated. The results show that when n(potassium permanganate):n(6-methylnicotinic acid) is 3:1, m(water):m(6-methylnicotinic acid) is 6:1,the acid-base refining method is used to purify crude product, final purity and total 99.5% and 70%, respectively. yield of 2,5-pyridine dicarboxylic acid can reach above
Keywords:6-methylnicotinic acid  Potassium permanganate  2  5-pyridine dicarboxylic acid
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