Acetic Acid → HCID 10207981, compound

Participants

Reaction Steps

(S)—N-[2-(3,4-Dichlorophenyl)-4-oxobutyl]-N-methylbenzamide (0.78 g) in methanol (3 mL) was added to a solution of [1,4′]bipiperidinyl-2-one (0.34 g) and acetic acid (0.15 mL) in methanol (8 mL). After 10 minutes, sodium cyanoborohydride (0.17 g) in methanol (4 mL) was added in a single portion. After being stirred overnight, the reaction mixture was diluted with saturated aqueous sodium bicarbonate, stirred for 30 minutes, and extracted with dichloromethane (4×50 mL). The organic extracts were dried, evaporated, and purified by chromatography, with dichloromethane:methanol (gradient 95:5, 90:10) as eluent to give the title compound (0.95 g). MS: m/z=516(M+). The product was dissolved in methanol (2 mL) and citric acid was added. The solution was concentrated and the residue was triturated with ether. The product was obtained as a white foam (1.2 g).

Provenance & Evidence