Diisopropylethylamine → 5-(4-{5-[(4-Fluorophenyl)methyl]-6-methylpyrimidin-4-yl}-2,3,4,5-tetrahydro-1,4-benzoxazepin-7-yl)-3-nitropyridin-2-amine

Participants

Reaction Conditions

Reaction Steps

To a solution of 4-{5-[(4-fluorophenyl)methyl]-6-methylpyrimidin-4-yl}-7-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,3,4,5-tetrahydro-1,4-benzoxazepine (1.3 g, 2.7 mmol), potassium hydrogen carbonate (1.4 g, 14 mmol), 2-amino-5-bromo-3-nitropyridine (0.98 g, 4.5 mmol) and DIPEA (1.4 mL, 8.2 mmol) in dioxane (8 mL) and water (1 mL) was added dichloro[1,1-bis(diphenylphosphino]ferrocenepalladium (II) dichloromethane adduct (0.20 g, 0.27 mmol). The biphasic mixture was then heated (90° C.) for 2 h and the organic layer was separated and purified by column chromatography on silica (0-10% methanol/dichloromethane) to provide 5-(4-{5-[(4-fluorophenyl)methyl]-6-methylpyrimidin-4-yl}-2,3,4,5-tetrahydro-1,4-benzoxazepin-7-yl)-3-nitropyridin-2-amine (0.49 g, 37% yield) as a orange-red solid. MS (EI) for C26H23FN6O3: 487 (MH+).

Provenance & Evidence