processo para cristalização de n-(4-trifluormetilfenil)-5-metil-isoxazol-4-carboxami da

The invention relates to a process for obtaining N-(4-trifluoromethylphenyl)-5-methyl-isoxazole-4-carboxamide in crystalline form, which is essentially free of byproducts. For this purpose, N-(4-trifluoromethylphenyl)-5-methylisoxazole-4-carboxamide is transferred into an organic solvent or into mix...

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Hauptverfasser:	HOLGER FAASCH, HANS-HERMANN LAU, UDO HEDTMANN, ANDREAS GAPPISCH
Format:	Patent
Sprache:	por
Schlagworte:	CHEMISTRY HETEROCYCLIC COMPOUNDS METALLURGY ORGANIC CHEMISTRY
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creator	HOLGER FAASCH HANS-HERMANN LAU UDO HEDTMANN ANDREAS GAPPISCH
description	The invention relates to a process for obtaining N-(4-trifluoromethylphenyl)-5-methyl-isoxazole-4-carboxamide in crystalline form, which is essentially free of byproducts. For this purpose, N-(4-trifluoromethylphenyl)-5-methylisoxazole-4-carboxamide is transferred into an organic solvent or into mixtures of organic solvents and water, the amount of byproduct in the solution is determined by quantitative analysis and an equimolar amount of a base is added. N-(4-Trifluoromethylphenyl)-5-methyl-isoxazole-4-carboxamide is isolated from the resulting solution by crystallization.
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subjects	CHEMISTRY HETEROCYCLIC COMPOUNDS METALLURGY ORGANIC CHEMISTRY
title	processo para cristalização de n-(4-trifluormetilfenil)-5-metil-isoxazol-4-carboxami da
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