Diisopropylethylamine → N-(5-cyano-2-methylphenyl)-4-[(4-phenylquinazolin-2-yl)amino]benzamide

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To a stirred mixture of 4-(4-phenylquinazolin-2-ylamino)benzoic acid (1.37 g, 4.02 mmol), 3-amino-4-methylbenzonitrile (529 mg, 4.01 mmol), and Hunig's base (2.1 mL, 12 mmol) in dimethylformamide (10 mL) was added HATU (3.04 g, 8.00 mmol). The stirred mixture was heated to 80° C. overnight, then cooled to rt. The reaction was diluted with ethyl acetate and extracted with water. The organic layer was washed with saturated sodium bicarbonate and concentrated on a rotary evaporator. The residue was sonicated with acetonitrile and filtered to give a light yellow solid, which was again washed with water, acetonitrile, and dried under reduced pressure to give N-(5-cyano-2-methylphenyl)-4-[(4-phenylquinazolin-2-yl)amino]benzamide (1.18 g, 65%) as a light yellow solid. 1H NMR (400 MHz, DMSO-d6): δ 10.36 (s, 1H), 9.87 (s, 1H), 8.19 (d, 2H), 8.00 (d, 2H), 7.91-7.78 (m, 6H), 7.66-7.62 (m, 4H), 7.51 (d, 1H), 7.42 (ddd, 1H), 2.36 (s, 3H). MS (EI) for C29H21N5O: 456.1 (MH+).

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