反应详情

1,4-Dioxaspiro[4.5]decan-8-one (10.0 g, 64.10 mmol, 1.0 eq.) was dissolved in MeOH (100 ml); AcOH (0.1 ml) and CH3NH2.HCl (8.65 g, 128.21 mmol, 2.0 eq.) were added and stirring was carried out for 2 hours at RT. NaCNBH3 (10.0 g, 160.256 mmol, 2.5 eq.) was added in portions at 0° C. and the mixture was then stirred for 16 hours at RT. The reaction mixture was concentrated under reduced pressure and the residue was purified by column chromatography (Alox, 5% MeOH in DCM). Yield: 54% (6.0 g, 35.08 mmol)

1. stirringthe mixture was then stirred for 16 hours at RT
2. concentrationThe reaction mixture was concentrated under reduced pressure
3. customthe residue was purified by column chromatography (Alox, 5% MeOH in DCM)