Pyridine → HCID 22315248, compound

Participants

Reaction Conditions

Reaction Steps

A solution of triphenylphosphine (238 mg, 0.91 mmol) in methylene chloride (10 mL) was cooled to 0° C. and then treated with N-bromosuccinimide (183 mg, 1.03 mmol). The reaction mixture was stirred at 0° C. until it was completely dissolved and became light purple in color. The reaction mixture was then treated with 2-(3-chloro-4-methanesulfonyl-phenyl)-3-cyclopentyl-propionic acid (prepared as in Example 92, 200 mg, 0.61 mmol) and stirred at 0° C. for 20 min and then warmed to 25° C. where it was stirred for 30 min. After such time, the reaction mixture was treated with 2-amino-5-chloropyridine (117 mg, 0.91 mmol) and pyridine (0.088 mL, 1.09 mmol), and the reaction mixture was stirred at 25° C. for 16 h. The reaction was then diluted with water (10 mL) and then extracted with methylene chloride (3×15 mL). The combined organic layers were dried over sodium sulfate, filtered, and concentrated in vacuo. Flash chromatography (Merck Silica gel 60, 230-400 mesh, 80/20 hexanes/ethyl acetate) afforded 2-(3-chloro-4-methanesulfonyl-phenyl)-3-cyclopentyl-N-(5-chloro-pyridin-2-yl)-propionamide (110 mg, 41%) as a yellow foam: EI-HRMS m/e calcd for C20H22 Cl2N2O3S (M+) 440.0728, found 440.0728.

Provenance & Evidence