反应详情

4-Chloro-3-(4-chloro-6-fluoro-3-methoxy-2-nitrophenyl)-1-methyl-5-trifluoromethyl-1H-pyrazole (0.48 g, 1.24 mmol) was dissolved in toluene (8 ml) and 0.05 g of 10% palladium on carbon was added. The solution was vigorously stirred under hydrogen atmosphere for 4 hr at ambient temperature and the catalyst was removed by filtration. Removal of the solvent afforded a residue which was chromatographed on silica gel. Elution of the column with hexanemethylene chloride (3:7) furnished the title compound (0.38 g).

1. customthe catalyst was removed by filtration
2. customRemoval of the solvent
3. customafforded a residue which
4. customwas chromatographed on silica gel
5. washElution of the column with hexanemethylene chloride (3:7)