[F:1][C:2]([F:20])([F:19])[C:3]([N:5]1[CH2:11][C:10](=[CH2:12])[C:9]2[CH:13]=[CH:14][C:15]([O:17][CH3:18])=[CH:16][C:8]=2[CH2:7][CH2:6]1)=[O:4].B.C1C[O:25]CC1.C([O-])(O)=O.[Na+].OO>O1CCCC1.CCOC(C)=O.O>[F:20][C:2]([F:1])([F:19])[C:3]([N:5]1[CH2:11][CH:10]([CH2:12][OH:25])[C:9]2[CH:13]=[CH:14][C:15]([O:17][CH3:18])=[CH:16][C:8]=2[CH2:7][CH2:6]1)=[O:4]
A solution of N-trifluoroacetyl-7-methoxy-1-methylene-2,3,4,5-tetrahydro-1H-3-benzazepine (0.100 g, 0.35 mmol) in tetrahydrofuran (1 mL) was treated with BH3-THF complex (0.36 mL, 1M in THF), and stirred for 30 min. at 20° C. Water (0.5 mL), saturated aqueous NaHCO3 (0.5 mL), and 30% H2O2 (0.2 mL) were added sequentially and the reaction stirred for 30 min. at 20° C. The product mixture was diluted with EtOAc (10 mL), washed with brine (10 mL), and concentrated. Flash chromatography (33% EtOAc in hexane, silica) resulted in 0.035 g of a clear oil. MS calculated for C14H16F3NO3+H: 304, observed: 304.
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