Benzyl Bromide → N-Trifluoroacetyl-7-benzyloxy-8-bromo-1-methyl-2,3,4,5-tetrahydro-1H-3-benzazepine

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Reaction Steps

A solution of N-trifluoroacetyl-8-bromo-7-hydroxy-1-methyl-2,3,4,5-tetrahydro-1H-3-benzazepine (0.075 g, 0.213 mmol) in dichloromethane (5 mL) was treated with benzyl bromide (0.072 g, 0.64 mmol), DBU (0.100 g, 0.64 mmol), and stirred 2 hours at 20 C. The product mixture was diluted with EtOAc (50 mL), washed with 5% aqueous HCl (20 mL), brine (20 mL), dried with Na2SO4 and concentrated. Flash chromatography (15% EtOAc in hexane, silica) resulted in 0.081 g of a clear oil. MS calculated for C20H19BrF3NO2+H: 442, observed: 442.

Provenance & Evidence