反应详情

Treat a solution of N-methyl-1-(4-(1-methyl-1H-pyrazol-5-yl)phthalazin-1-yl)piperidin-4-amine (2.8 g, 8.68 mmol) and triethylamine (3.36 mL, 26.1 mmol) in CH2Cl2 (30 mL) with 4-fluoro-2-(trifluoromethyl)benzoyl chloride (2.14 mL, 10.42 mmol). Stir for 3 h at ambient temperature. Concentrate the reaction mixture under reduced pressure. Purify the resulting residue by flash silica gel chromatography (hexane:ethyl acetate:2 M NH3 in MeOH=20:5:1) to provide the free base as a yellow foam (3.83 g, 86%). ES/MS m/z 513.0 (M+1).

1. concentrationConcentrate the reaction mixture under reduced pressure
2. customPurify the resulting residue by flash silica gel chromatography (hexane:ethyl acetate:2 M NH3 in MeOH=20:5:1)