Ethyl Acetate → 4-[6,7-Bis(methyloxy)quinolin-4-yl]-7-bromo-2,3,4,5-tetrahydro-1,4-benzoxazepine

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Reaction Conditions

Reaction Steps

A mixture of 7-bromo-2,3,4,5-tetrahydro-1,4-benzoxazepine hydrochloride (300 mg, 1.13 mmol), 4-chloro-6,7-dimethoxyquinoline (253 mg, 1.13 mmol), and potassium carbonate (470 mg, 3.40 mmol) in N-methylpyrrolidine (2 mL) was stirred at 160° C. for 17 h. Ethyl acetate (75 mL) was added and the mixture was washed with water (3×25 mL) and brine (25 mL), dried over sodium sulfate, and concentrated. Column chromatography on silica (dichloromethane:methanol 95:5) afforded 4-[6,7-bis(methyloxy)quinolin-4-yl]-7-bromo-2,3,4,5-tetrahydro-1,4-benzoxazepine (80 mg). MS (EI) for C20H19BrN2O3: 416 (MH+).

Provenance & Evidence