Diisopropylethylamine → 3-((3R,4R)-3-Fluoro-4-(3-fluoro-4-methoxyphenyl)piperidin-1-yl)-1-(3-fluoro-4-methylbenzyl)pyrrolidin-2-one

Participants

Reaction Conditions

Reaction Steps

A mixture of (3R,4R)-3-fluoro-4-(3-fluoro-4-methoxyphenyl)piperidine hydrochloride (30 mg, 0.114 mmol, from step K), 3-bromo-1-(3-fluoro-4-methylbenzyl)pyrrolidin-2-one (54 mg, 0.189 mmol, intermediate 6) and DIPEA (0.020 mL, 0.114 mmol) in DMF (3 mL) was heated to 120° C. for 90 min in the a microwave reactor. The solvent was then removed under reduced pressure to obtain 60 mg of 3-((3R,4R)-3-Fluoro-4-(3-fluoro-4-methoxyphenyl)piperidin-1-yl)-1-(3-fluoro-4-methylbenzyl)pyrrolidin-2-one (diastereomeric pair) which was used in the next step without further purification. LCMS (Method P) RT=1.12 min, m/z 433 (M+H+).

Provenance & Evidence