1-Aminopiperidine → N-(piperidin-1-yl)-4-{4-[3-(1H-pyrazol-4-yl)pyrrolidine-1-carbonyl]-3,4-dihydro-2H-quinoxalin-1-yl}benzamide

Participants

Reaction Steps

0.4 g of 4-[4-{[3-(1H-pyrazol-4-yl)pyrrolidin-1-yl]carbonyl}-3,4-dihydroquinoxalin-1(2H)-yl]benzoic acid, 0.19 g of 1-aminopiperidine, 0.26 g of hydroxybenzotriazole, 0.37 g of EDC.HCl and 7 ml of a dioxane/dimethylformamide 5/2 mixture are introduced into a 100 ml round-bottomed flask equipped with a magnetic stirrer. The reaction mixture is stirred at ambient temperature for 20 h and concentrated under vacuum. The residue is chromatographed on silica gel eluted with a dichloromethane/acetone/methanol/NH4OH 88/10/2/0.2 and then 82/15/3/0.3 mixture. After triturating in ethyl ether, 0.28 g of N-(piperidin-1-yl)-4-{4-[3-(1H-pyrazol-4-yl)pyrrolidine-1-carbonyl]-3,4-dihydro-2H-quinoxalin-1-yl}benzamide is obtained.

Provenance & Evidence