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作 者:丁华平[1] 陈素云[1] DING Huaping;CHEN Suyun(Jiangsu Changqing Agrochemical Co.,Ltd.,Yangzhou 225200,China)
机构地区:[1]江苏长青农化股份有限公司
出 处:《世界农药》2020年第2期33-35,共3页World Pesticide
摘 要:三氟啶磺隆是高效磺酰脲类除草剂,主要用于防除棉花田和甘蔗田的阔叶杂草,具有用药量低、除草效果好、安全性高的特点,在中国具有较好的应用前景。主要以2-硝基-3-羟基吡啶为起始原料,首先发生甲磺酰化,然后苄硫醇取代、醚交换、氧化再氨化,最后偶联得到三氟啶磺隆。产物及中间体经过1H NMR和14C NMR确认。该路线反应条件温和,操作简便,溶剂可回收套用。Trifluridinesulfuron is a highly effective sulfonylurea herbicide mainly used for controlling broad-leaved weeds in cotton fields and sugarcane fields.It has the characteristics of low dosage,good herbicidal effect and high safety.It has a good application prospect in China.This method mainly uses 2-nitro-3-hydroxypyridine as a starting material,and undergoes mesylation,nucleophilic substitution,ether exchange reaction,oxidative re-amination,and finally coupling to obtain trifluridinesulfuron.The product and intermediate were confirmed by 1H NMR and 14C NMR.The route has the advantages of mild reaction conditions,simple operation,and solvent recovery.
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