Sodium Hydroxide → HCID 69420232, compound

Participants

Reaction Steps

Sodium triacetoxyborohydride (340.4 mg, 1.61 mmol) was added to a solution of 3-((3,N-dimethyl)benzenesulfonamido)cyclopentan-1-one (280.7 mg, 1.05 mmol), and 4-trifluoromethylpiperidine (194.8 mg, 1.27 mmol) in 1,2-dichloroethane (10 ml). The resulting mixture was stirred at room temperature overnight (20 hours). 1M Aqueous sodium hydroxide (25 ml) was added and the mixture extracted with dichloromethane (2×10 ml). The combined extracts were dried (K2CO3) and evaporated. The residue was purified by medium pressure silica chromatography, eluting with 2.5% methanol in dichloromethane, to afford cis-3,N-dimethyl-N-(3-(4-trifluoromethylpiperidin-1-yl)cyclopentyl) -benzenesulfonamide (93.1 mg, 22%). A portion of this material was dissolved in ethyl acetate, warmed and treated with hydrogen chloride in diethyl ether to afford the title compound as a white crystalline solid; δH (400 MHz, CD3OD) 1.68 (2H, m), 1.83 (4H, m), 2.06-2.18 (4H, m), 2.44 (3H, s), 2.60 (1H, m), 2.79 (3H, s), 2.99 (2H, m), 3.51 (1H, m), 3.63 (1H, m), 3.69 (1H, m), 4.43 (1H, m), 7.47 (2H, m), 7.63 (2H, m); m/z (ES+) 405 ([M+H]+, 100%).

Provenance & Evidence