2,6-Difluorophenyl isocyanate → HCID 86686923, compound

Participants

Reaction Steps

To a solution of (6-fluoro-3-methyl-4-piperidin-4-yl-naphthalen-2-yl)-acetic acid methyl ester (which may be prepared as described above; 75.5 mg, 0.239 mmol) in methylene chloride (8.0 mL) was added neat 2,6-difluorophenyl isocyanate (74.1 mg, 0.478 mmol) at room temperature under nitrogen. The resulting light brown solution was stirred overnight. The reaction mixture was diluted with water (˜20 mL) and the resulting mixture was extracted with methylene chloride (2×30 mL). The combined organic layers were washed with saturated aqueous NaHCO3, dried over anhydrous Na2SO4, filtered, then concentrated to a yellowish film. Silica gel chromatography (33% ethyl acetate in hexanes) provided {4-[1-(2,6-difluoro-phenylcarbamoyl)-piperidin-4-yl]-6-fluoro-3-methyl-naphthalen-2-yl}-acetic acid methyl ester (95.4 mg, 85%) as a colorless film. MS cald. for C26H26F3N2O3 [(M+H)+]: 471, obsd. 471.2.

Provenance & Evidence