反应详情

To a solution (±)-2-chloro-N-[[1-(methylamino)cyclopentyl](phenyl)methyl]-3-(trifluoromethyl)benzamide E22 (143 g; 0.35 mmol), cyclopropanecarboxaldehyde (0.026 ml; 0.035 mmol) and acetic acid (3 drops) in 1,2-dichloroethane (10 ml) was added sodium triacetoxyborohydride (303 mg; 1.4 mmol). The resulting mixture was allowed to stir at room temperature under argon overnight. Then the reaction mixture was diluted with DCM (20 ml), washed with saturated potassium carbonate solution and brine, dried (Na2SO4) and evaporated in vacuo. The mixture was separated by column chromatography on silica gel using 20% ether in n-pentane to 2% methanol in ether. The oil obtained was treated with 1M HCl in ether to give the title product as an off white hydrochloride salt (0.054 g; 33%). Mass Spectrum (Electrospray LC/MS). Found 465 (MH+). C25H2835ClF3N2O requires 464. Ret. time: 2.30 min.

1. washwashed with saturated potassium carbonate solution and brine
2. dry with materialdried (Na2SO4)
3. customevaporated in vacuo
4. customThe mixture was separated by column chromatography on silica gel using 20% ether in n-pentane to 2% methanol in ether
5. customThe oil obtained