Pyridine → HCID 10093668, compound

Participants

Reaction Conditions

Reaction Steps

A solution of 2(R)-(3-chloro-4-methanesulfonyl-phenyl)-3-(2-oxo-cyclopentyl)-propionic acid (125 mg, 0.36 mmol) in methylene chloride (3.62 mL) cooled to 0° C. was treated with a 2.0M solution of oxalyl chloride in methylene chloride (0.20 mL, 0.39 mmol) and a few drops of N,N-dimethylformamide. The reaction mixture was stirred at 0° C. for 10 min and at 25° C. for 20 min. The reaction mixture was then treated with a solution of 2-aminopyrazine (76 mg, 0.80 mmol) and pyridine (0.06 mL, 0.80 mmol) in tetrahydrofuran (1.81 mL). This solution was stirred at 25° C. for 1 h. At this time, the reaction was concentrated in vacuo. Flash chromatography (Merck Silica gel 60, 230–400 mesh, 75/25 ethyl acetate/hexanes) afforded 2(R)-(3-chloro-4-methanesulfonyl-phenyl)-3-(2-oxo-cyclopentyl)-N-pyrazin-2-yl-propionamide (77.6 mg, 50.7%) as a white foam: EI-HRMS m/e calcd for C19H20ClN3O4S (M+) 421.0863, found 421.0868.

Provenance & Evidence