C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 285/13 (2006.01) C07D 285/12 (2006.01)
Patent
CA 2254625
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 in an aprotic, aromatic solvent. The process includes the steps of: (a) reacting 2-(methylsulfonyl)-5-(trifluoromethyl)-1,3,4- thiadiazole with N-(4-fluorophenyl)-2-hydroxy-N-(1-methylethyl)acetamide in the presence of an aprotic, aromatic solvent to form an aqueous phase and an organic phase; (b) acidifying the phases, (c) separating the phases; and (d) recovering the N-(4-fluorophenyl)-N-(1-methylethyl)-2-[(5- trifluoromethyl)-1,3,4-thiadiazol-2-yl)oxy]acetamide from the organic phase.
Applegate Jacqueline M.
Jelich Klaus
Newallis Peter E.
Prasad Vidyanatha A.
Wasleski Daniel M.
Corporation Bayer
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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