[F:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]([C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)=[O:9])=[CH:4][C:3]=1[N+:16]([O-:18])=[O:17].CO.[BH4-].[Na+].C(O)(=O)C>O>[F:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]([C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)[OH:9])=[CH:4][C:3]=1[N+:16]([O-:18])=[O:17]To a cooled (ice bath) solution of 24.5 parts of (4-fluoro-3-nitrophenyl) phenylmethanone in 120 parts of methanol were added portionwise 1.5 parts of sodium tetrahydroborate. Upon complete addition, stirring was continued for 15 minutes at 0° C. A solution of 3 parts of acetic acid in 25 parts of water was added dropwise to the mixture. Upon completion, the mixture was concentrated. Water was added to the residue and the product was extracted with dichloromethane. The extract was dried, filtered and concentrated, yielding 25.1 parts (100%) of 4-fluoro-3-nitro-α-phenylbenzenemethanol as an oily residue (int. 63).
Wird geladen…
