反应详情

Triethylamine (0.10 mL), acetic anhydride (50 μL), and 4-dimethylaminopyridine (5 mg) were added consecutively to (S)-6-(2-hydroxy-2-methyl-propyl)-6-phenyl-3-[(S)-1-(4-piperidin-4-yl-phenyl)-ethyl]-[1,3]oxazinan-2-one (0.12 g) dissolved in tetrahydrofuran (5 mL) at room temperature. The solution was stirred at room temperature for 4 h and then diluted with ethyl acetate. The resulting solution was washed with aqueous saturated NaHCO3 solution and brine and dried (Na2SO4). After removal of the solvent, the residue was purified by chromatography on silica gel (CH2Cl2/MeOH 98:2→90:10) to afford the title compound as a colorless foam-like solid.

1. washThe resulting solution was washed with aqueous saturated NaHCO3 solution and brine
2. dry with materialdried (Na2SO4)
3. customAfter removal of the solvent
4. customthe residue was purified by chromatography on silica gel (CH2Cl2/MeOH 98:2→90:10)