反应详情

A solution of 1-(4-amino-3′-fluoro[1,1′-biphenyl]-3-yl)ethanone (3 g, 13 mmol) in anhydrous methanol (60 mL) was then treated at room temperature under nitrogen with sodium borohydride in a portion wise manner. After addition, the reaction mixture was stirred for 4 hours, treated with a saturated solution of aqueous ammonium sulfate (50 mL) and ethyl acetate (100 mL). The organic layer was separated, dried (MgSO4), and evaporated in vacuo. The residue was purified on a silica gel chromatography (hexane:ethyl acetate/3:1) to yield 1-(4-amino-3′-fluoro[1,1′-biphenyl]-3-yl)ethanol as a white solid (2 g, 67%): mp 136-137° C.

1. additionAfter addition
2. customThe organic layer was separated
3. dry with materialdried (MgSO4)
4. customevaporated in vacuo
5. customThe residue was purified on a silica gel chromatography (hexane:ethyl acetate/3:1)