第 37 卷第 6 期 | | Vol. 37 No. 6 | 2007 年 12 月 | Dec 2007 |
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所属栏目:农药及中间体
2-氯烟酸的合成 |
陈建辉,吴志刚,沈大冬,胡建香
(浙江医药股份有限公司 新昌制药厂,浙江 新昌 312500) |
摘 要:综述了2-氯烟酸的合成工艺,并提出了改进的工艺路线。3-氰基吡啶先经乙酰丙酮酸钼催化氧化得到烟酸N-氧化物,再经有机碱和苯磷酰二氯作用下,三氯氧磷氯化得到2-氯烟酸,总收率95.0%。 |
关键词:2-氯烟酸;合成;乙酰丙酮酸钼;苯磷酰二氯 |
中图分类号:O626.32 文献标识码:A 文章编号:1009-9212(2007)06- 0019-03 |
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ynthesis of 2-Chloronicotinic Acid |
CHEN Jian-hui,WU Zhi-gang,SHEN Da-dong,HU Jian-xiang
(Xinchang Pharmaceutical Factory, Zhejiang Medicine Co., Ltd.,Xinchang 312500, China) |
Abstract:An improved synthetic process of 2-chloronicotinic acid was reported based on reviewing its synthetic processes in detail. 3-cyanopyridine was oxidized to nicotinic acid N-oxide using molybdenyl acetylacetonate as catalyst, and then chloridized to give the title product 2-chloronicotinic acid through chlorination by POCl3 in presence of organic base and phenyl dichlorophosphate(PDCP). The total yield of 2-chloronicotinic acid was 95%. |
Key words:2-chloronicotinic acid; synthesis; molybdenyl acetylacetonate; phenyldichlorophosphate |
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作者简介:陈建辉(1971-),男,浙江新昌人,高级工程师,从事新药合成。(E-mail:chenjianhui-2005@sohu.com)
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收稿日期:2007-10-16
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