豆田除草剂虎威的合成研究  

Synthesis technique of soybean herbicide fomesafen

作　　者：陆阳[1] 董超宇[2] 李春仁[3] 陶京朝[4] 马力[5] 

机构地区：[1]郑州大学化学系,河南郑州450001 [2]开封大学化学工程系,河南开封475000 [3]信阳职业技术学院,河南信阳464003 [4]信阳农业高等专科学校有机化学教研室,河南信阳464000 [5]河南富邦农药化工公司,河南信阳464000

出　　处：《山西化工》2007年第1期15-17,39,共4页Shanxi Chemical Industry

摘　　要：以间羟基苯甲酸和3,4-二氯三氟甲苯为起始原料,经过醚化、硝化和酰化三步反应合成虎威(氟黄胺草醚)。研究了虎威的合成工艺。试验表明,当温度为75℃~80℃、反应时间为3.5 h^4.5 h、摩尔比为n(三氟羧草醚)∶n(甲基磺酰胺)∶n(三氯氧磷)=1∶1.03∶1.62时,产品收率可达91.7%。对合成的氟磺胺草醚经过精制处理,其纯度为98.5%。该生产工艺可以降低成本,适于工业化生产。Fomesafen, was synthesized via condensation, nitration and acylation using m-hydroxybenzoic, 3, 4-dichlorlde-trifluoridemethylbenzene as starting reagents. The synthesis technology of fomesafen was researched. The experiment showed that at 75 ℃～ 80 ℃, a reaction time of 3.5 h-4.5 h, a molar ratio for n （acifluorfen） ： n （methylsulfoamide） ： n （trichloridephosphorusoxid） = 1 ： 1.03：1.62, the product yield was 91.7 %. When the synthesized fomesafen was first put through a purification treatment, the purity was 98.5 %. Both quality and yield were consistent across batches. Thus, this process provided a lower energy consumption production technology and was suitable for industrial scale manufacturing.

关 键 词：除草剂 虎威 合成 

分 类 号：TQ457.2[化学工程—农药化工]