1-(Bromomethyl)-3-fluoro-5-(trifluoromethyl)benzene → HCID 57941435, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of (4S,7R)-2-(2,4-difluoro-phenyl)-7,8,8-trimethyl-1,2,4,5,6,7-hexahydro-4,7-methano-indazol-3-one (Intermediate 14; 25 mg, 0.08 mmol), tetrabutylammonium iodide (30 mg, 0.08 mmol) and 3-fluoro-5-trifluoromethyl-benzyl bromide (75 mg, 0.29 mmol) in dimethylformamide (1 mL) was heated at 100° C. overnight. The reaction mixture was diluted with dichloromethane (50 mL) and the solution was washed with water/brine (1:1; 20 mL), water (2×20 mL), sodium thiosulfate (20 mL) and brine (20 mL). The solution was dried (magnesium sulfate), filtered, concentrated and purified by chromatography, eluting with 50% ethyl acetate/petroleum ether, to give (4S,7R)-2-(2,4-difluoro-phenyl)-1-(3-fluoro-5-trifluoromethyl-benzyl)-7,8,8-trimethyl-1,2,4,5,6,7-hexahydro-4,7-methano-indazol-3-one (21 mg, 53%) as an off-white solid. APCI(+)-MS (M+H) 481.

Provenance & Evidence