2-Chloronicotinic acid → 2-Chloro-N-[1-(2,6-dichloro-pyridin-3-yl)-cyclopropylmethyl]nicotinamide

Participants

Reaction Conditions

Reaction Steps

0.45 ml of C-[1-(2,6-dichloro-pyridin-3-yl)-cyclopropyl]-methylamine was dissolved in 1.5 ml of dichloromethane under argon and 0.11 ml of triethylamine was added at ambient temperature. Ther reaction mixture was cooled at 0° C. and 383 mg of 3-(trifluoromethyl)pyridine-2-carboxylic acid, 145 mg of EDCI.HCl, 103 mg of HOBT hydrate and 59 mg of 2-chloropyridine-3-carboxylic acid were added sequentially. The reaction mixture was stirred at ambient temperature for 14 hours. Then water was added, the phases were separated and the aqueous phase was extracted with dichloromethane. The organic layers were combined, dried with anhydrous sodium sulphate, filtered and concentrated. Crude material was obtained as a yellow sticky solid, which was purified by trituration in diethyl ether to give 60 mg of the desired 2-Chloro-N-[1-(2,6-dichloro-pyridin-3-yl)-cyclopropylmethyl]nicotinamide as white solid. 1H-NMR (CDCl3): 8.45 ppm (m, 1H), 8.04 ppm (m, 1H), 7.68 ppm (d, 1H), 7.34 ppm (m, 1H), 6.53 ppm (m, 1H), 3.72 ppm (d, 2H), 1.19 ppm (m, 2H), 0.96 ppm (m, 2H).

Provenance & Evidence