1,1'-Carbonyldiimidazole → HCID 69970027, compound

Participants

Reaction Steps

A stirred solution of (S)-N-[4-[4-(2-aminoethylamino)-piperidino]-2-(3,4-dichlorophenyl)butyl]-N-methylbenzamide (0.356 g) and 1,1'-carbonyldiimidazole (0.157 g) in chloroform (6 mL) was heated at reflux for 2 hours. The reaction mixture was diluted with dichloromethane, washed (aqueous sodium bicarbonate), dried, evaporated, and chromatographed, with dichloromethane:methanol (gradient 98:2, 90:10) as eluent. The resulting material was dissolved in dichloromethane, precipitated as the hydrochloride salt with ethereal hydrogen chloride, evaporated, and placed under high vacuum overnight to give the title compound as a white solid (0.244 g); MS: m/z=503(M+1); Analysis for C26H32Cl2N4O2.1.70 HCl.0.20 (C2H5)2O: Calculated: C, 55.47; H, 6.20; N, 9.65; Found: C, 55.47; H, 6.35; N, 9.44.

Provenance & Evidence