Acetic Acid → HCID 90801850, compound

Participants

Reaction Steps

To a solution of Example 331 (1.2 g, 2.0 mmol) in methanol (10 mL) and tetrahydrofuran (5 mL) added a 2M solution of methylamine in tetrahydrofuran (5 mL) and acetic acid (0.6 mL, 10 mmol). Then sodium triacetoxyborohydride (1.25 g, 6 mmol) was added and the mixture was stirred at room temperature for about 5 hours. The mixture was diluted with ethyl acetate, washed with saturated aqueous sodium carbonate and the aqueous phase was extracted with ethyl acetate. The combined organic layers were dried (Na2SO4), filtered and concentrated under vacuum. The residue was purified by flash chromatography on silica gel using dichloromethane/methanol (10:1)+1% ammonium hydroxide as eluent to provide the desired product. MS (ESI): m/z 620 (M+H)+.

Provenance & Evidence