反应详情

Add the 5-(4-trifluoromethyl-benzylidene)-10,11-dihydro-5H-dibenzo[a,d]cycloheptene (0.14 g, 0.45 mmol), to a mixture of 10% Pd/C (0.05 g) suspended in absolute ethanol (4.0 mL) and ethyl acetate (4.0 mL) and hydrogenate under a balloon of hydrogen at room temperature and pressure. Stir for 17 h, remove the catalyst via filtration through a pad of Celite. Evaporate the filtrate and pass through a plug of silica gel equilibrated with hexanes. Concentrate the filtrate to gives the title product. MS (m/e): 352 (M+); Analysis for C23H19F3: Calcd: C, 78.39 H, 5.43. Found: C, 78.70 H, 5.16.

1. customat room temperature
2. customremove the catalyst
3. filtrationvia filtration through a pad of Celite
4. customEvaporate the filtrate and pass through a plug of silica gel
5. concentrationConcentrate the filtrate