Process for isolating N-(4-fluorophenyl)-N-(1-methylethyl)-2-(5-trifluoromethyl)-1,3,4-thiadi azol-2-yl)oxy!acetamide
AssigneeBayer Aktiengesellschaft
InventorsVidyanatha A. Prasad, Jonathan D. Spicher, Warren A. Fischer
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Abstract
The present invention relates to a process for isolating N-(4-fluorophenyl)-N-(1-methylethyl)-2-(5-trifluoromethyl)-1,3,4-thiadiaz ol-2-yl)oxy!acetamide from a solution of N-(4-fluorophenyl)-N-(1-methylethyl)-2-(5-trifluoromethyl)-1,3,4-thiadiaz ol-2-yl)oxy!acetamide in an aprotic, aromatic solvent. The process includes the steps of: (a) removing the solvent from the solution to form a substantially solvent-free material; (b) melting the material from step (a) to form a molten material; and (c) isolating N-(4-fluorophenyl)-N-(1-methylethyl)-2-(5-trifluoromethyl)-1,3,4-thiadiaz ol-2-yl)oxy!acetamide from the molten material by flaking.
Claims16
A process for isolating N-(4-fluorophenyl)-N-(1-methylethyl)-2-(5-trifluoromethyl)-1,3,4-thiadiaz ol-2-yl)oxy!acetamide from a solution of N-(4-fluorophenyl)-N-(1-methylethyl)-2-(5-trifluoromethyl)-1,3,4-thiadiaz ol-2-yl)oxy!acetamide in an aprotic, aromatic solvent, comprising the steps of:
- (a) removing the solvent from the solution to form a substantially solvent-free material;
- (b) melting the material from step (a) to form a molten material;
- and
- (c) isolating N-(4-fluorophenyl)-N-(1-methylethyl)-2-(5-trifluoromethyl)-1,3,4-thiadiaz ol-2-yl)oxy!acetamide from the molten material by flaking.
Dependencies are inferred from the claim text.