Process for producinog thiadiazol acetamides deriv. compound

本发明涉及制备N-(4-氟苯基)-N-(1-甲基乙基)-2-[(5-(三氟甲基)-1，3，4-噻二唑-2-基)-氧基]乙酰胺的方法，该方法包括下述步骤：使2-(甲基磺酰基)-5-(三氟甲基)-1，3，4-噻二唑与N-(4-氟苯基)-N-(1-甲基乙基)-2-羟基乙酰胺和含水的碱在质子惰性的芳族溶剂存在下反应，形成水相和有机相，分离水相和有机相，从有机相中回收N-(4-氟苯基)-N-(1-甲基乙基)-2-[(5-(三氟甲基)-1，3，4-噻(二唑-2-基)-氧基]乙酰胺。优选的溶剂和含水碱分别是甲苯和含水的氢氧化钠。 The present invention relates to a process for making N-(4-fluorophenyl)-N-(1-methylethyl)-2-[(5-(trifluoromethyl)-1,3,4-thiadiazol-2-yl)-oxy]-acetamide, which process includes the steps of reacting 2-(methylsulfonyl)-5-(trifluoromethyl)-1,3,4,-thiadiazole with N-(4-fluorophenyl)-N-(1-methylethyl)-2-hydroxyacetamide in an aprotic, aromatic solvent with aqueous alkali to form an aqueous phase and an organic phase, separating the aqueous and organic phases and recovering the N-(4-fluorophenyl)-N-(1-methylethyl)-2-[(5-(trifluoromethyl)-1,3,4-thiadiazol-2-yl)-oxy]-acetamide from the organic phase. A preferred solvent and aqueous alkali are toluene and aqueous sodium hydroxide, respectively.