1-methyl-3-(trifluoromethyl)-1H-pyrazole-4-carbonyl chloride → 1-Methyl-3-trifluoromethyl-1H-pyrazole-4-carboxylic acid [3-(2-oxo-2,3-dihydro-1H-indole-6-carbonyl)-phenyl]-amide

Participants

Reaction Steps

A dry 25 mL flask was charged with 1-Methyl-3-trifluoromethyl-1H-pyrazole-4-carbonyl chloride (0.186 g, 0.873 mmol) and THF (2 mL). 6-(4-Amino-benzoyl)-1,3-dihydro-indol-2-one (as prepared in Example 40, 0.200 g, 0.794 mmol) was added to the THF solution of the acid chloride, and the mixture was allowed to reflux for 2 h. The reaction mixture was then allowed to cool to room temperature. The room temperature reaction mixture was concentrated in vacuo. The light yellow solids were washed with THF (˜3 mL) and filtered to afford the pure product 1-Methyl-3-trifluoromethyl-1H-pyrazole-4-carboxylic acid [3-(2-oxo-2,3-dihydro-1H-indole-6-carbonyl)-phenyl]-amide (0.235 g, 0.627 mmol, 79%).

Provenance & Evidence