Position: Home > Articles > Synthesis of 2-Bromo-3-ethylsulfonyl Pyridine
Agrochemicals
2010,49
(5)
22-24
2-溴-3-乙磺酰基吡啶的合成
作 者：
陈明;聂萍;杨彬;赵东江;刘伟;毛春晖
单 位：
湖南化工研究院国家农药创制工程技术研究中心
关键词：
2-溴-3-乙磺酰基吡啶;玉嘧磺隆;合成
摘 要：
2-溴-3-乙磺酰基吡啶是磺酰脲类除草剂玉嘧磺隆重要中间体。以乙磺酰基乙腈和1,1,3,3-四甲氧基丙烷为起始原料,经取代、环合反应合成得到目标产物。含量≥95.0%,收率75.5%(以乙磺酰基乙腈计)。
译 名：
Synthesis of 2-Bromo-3-ethylsulfonyl Pyridine
作 者：
CHEN Ming,NIE Ping,YANG Bin,ZHAO Dong-jiang,LIU Wei,MAO Chun-hui (National Engineering Research Center for Agrochemiculs,Hunan Research Institute of Chemical Industry,Changsha 410007,China)
关键词：
2-bromo-3-ethylsulfonyl pyridine;rimsulfon;synthesis
摘 要：
2-Bromo-3-ethylsulfonyl pyridine is the key intermediate for preparation ultra-high sulfonylurea herbicides rimsulfuron.Using 1,1,3,3-tetramethoxypropane and ethylsulfonyl acetonitrile as starting materials,2-bromo-3- ethylsulfonyl pyridine was synthesized by substitution and cyclization reaction,the yield of the title compound was 75.5% (based on ethylsulfonyl acetonitrile),and the purity was above 95.0%.
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