Acetic Acid → HCID 18314284, compound

Participants

Reaction Steps

3-(3,4-Dichlorophenyl)-4-(2-phenylimidazol-1-yl)butyraldehyde (1.0 g) in methanol (7 mL) was added to a solution of 4-hydroxy-4-phenylpiperidine (0.741 g) and acetic acid (0.24 mL) in methanol (7 mL). After 5 minutes, sodium cyanoborohydride (0.263 g) in methanol (7 mL) was added in a single portion. After being stirred for 2 hours, the reaction mixture was diluted with aqueous sodium bicarbonate, stirred for 30 minutes, and extracted with dichloromethane. The organic extracts were dried, evaporated, and chromatographed, with dichloromethane:methanol (gradient 98:2, 90:10) as eluent. The purified material was dissolved in dichloromethane, precipitated out as the hydrochloride salt with ethereal hydrogen chloride, evaporated, and placed under high vacuum overnight to give the title compound as a white solid (0.760 g); NMR: 7.92 (m,1), 7.69 (m,2), 7.59 (m,2), 7.50 (m,2), 7.36 (m,2), 7.28 (m,4), 7.10 (d,1, J=2.1), 6.85 (dd,1, J=2.1, 8.3), 4.70 (dd,1, J=4.5, 14.0), 4.57 (dd,1, J=10.5, 13.9), 3.47 (m,3), 3.27 (m,2), 3.14 (m,1), 2.84 (m,1), 2.47-2.20 (m,4), 1.93 (m,2); MS: m/z=520(M+1); Analysis for C30H31Cl2N3O.2.80 HCl.0.15 Et2O: Calculated: C, 58.00; H, 5.61; N, 6.63; Found: C, 57.99; H, 5.80; N, 6.77.

Provenance & Evidence