Difluoromethanesulphonyl chloride → 2-(4-Bromophenyl)-5-cyclopropyl-6-{[(difluoromethyl)sulfonyl]amino}-N-methyl-2H-indazole-3-carboxamide

Participants

Reaction Steps

Compound (47) was prepared by the following method: To a suspension of 6-amino-2-(4-bromophenyl)-5-cyclopropyl-N-methyl-2H-indazole-3-carboxamide (20 mg, 0.052 mmol) in neat pyridine (1 mL) at 0° C. was added difluoromethanesulfonyl chloride (60 μL). After 3 d, the reaction was quenched with saturated aqueous ammonium chloride (1 mL) and then extracted with ethyl acetate (3×2 mL). The combined organics were washed with 1M aqueous citric acid (2 mL), brine (2 mL) then dried (MgSO4) and concentrated to dryness to afford crude 2-(4-Bromophenyl)-5-cyclopropyl-6-{[(difluoromethyl)sulfonyl]amino}-N-methyl-2H-indazole-3-carboxamide (18 mg, 69%) which was used without further purification.

Provenance & Evidence