Acetic Acid → HCID 68181210, compound

Participants

Reaction Steps

To a stirred solution of compound 53 (0.53 g, 1.62 mmol) in DCE (25 mL) were added successively formaldehyde (35% solution in H2O, 0.2 mL, 2.43 mmol), Na(OAc)3BH (1.03 g, 4.86 mmol) and acetic acid (0.2 mL) at 0° C., and the solution was allowed to stir at rt for 16 hours. The reaction mixture was diluted with ethyl acetate and basified with 1N NaOH solution. The organic layer was separated and washed with water and brine, dried over anhydrous Na2SO4, filtered and concentrated. The crude material was purified by chromatography on neutral alumina eluting 1% methanol-DCM to get compound 54.

Provenance & Evidence