反应详情

N-[2-(3,4-Dichlorophenyl)-4-hydroxybutyl]benzamide. A solution of the above ether (4.0 g) in tetrahydrofuran (20 mL) and 3 N hydrochloric acid (20 mL) was stirred for 2 hours. The reaction mixture was diluted with water, neutralized with 1 N sodium hydroxide, and extracted with dichloromethane. The organic extracts were dried, evaporated, and chromatographed, with dichloromethane:methanol (95:5) as eluent, to give the hydroxy benzamide compound as a viscous oil (2.9 g); NMR: 7.63 (m,2), 7.47 (m,1), 7.37 (m,3), 7.32 (d,1, J=2.1), 7.06 (dd,1, J=2.1, 8.3), 6.46 (m,1), 3.82 (m,1), 3.69 (m,1), 3.57-3.39 (m,2), 3.12 (m,1), 2.60 (m,1), 1.97 (m,1), 1.82 (m,1); MS: m/z=338(M+1).

1. extractionextracted with dichloromethane
2. customThe organic extracts were dried
3. customevaporated
4. customchromatographed, with dichloromethane:methanol (95:5) as eluent