反应详情

To a solution of 5-(3-trifluoromethyl-pyrazol-1-yl)-pyridine-2-carboxylic acid methyl ester (67 mg) in MeOH (4 ml) and THF (0.5 ml) was added a solution of LiOH (23 mg) in water (1 ml) and stirring was continued at 22° C. for 22 h. The mixture was evaporated and the residue partitioned between 1 N aqueous HCl and ethyl acetate, the organic layer was washed with water, dried and evaporated to give 5-(3-trifluoromethyl-pyrazol-1-yl)-pyridine-2-carboxylic acid (63 mg) as a white solid. MS (ESI): m/z=255.9 [M−H]−.

1. customThe mixture was evaporated
2. customthe residue partitioned between 1 N aqueous HCl and ethyl acetate
3. washthe organic layer was washed with water
4. customdried
5. customevaporated