反应详情

To a stirred solution of 3-(6,7-dimethoxyquinazolin-4-ylthio)aniline (76 mg, 0.24 mmol) described in Example 115B in anhydrous THF (1.5 mL), was added 4-chlorophenyl 3-(1,1,1-trifluoro-2-methylpropan-2-yl)isoxazol-5-ylcarbamate from Example 267A (84 mg, 0.24 mmol) and 4-(dimethylamino)pyridine (15 mg, 0.12 mmol). The mixture was stirred at rt for 6 h. To the suspension was added diethyl ether. Sonication and filtration afforded 1-(3-(6,7-dimethoxyquinazolin-4-ylthio)phenyl)-3-(3-(1,1,1-trifluoro-2-methylpropan-2-yl)isoxazol-5-yl)urea (88.8 mg, 69%) as a colorless solid. 1H NMR (300 MHz, DMSO-d6) δ 10.48 (s, 1H), 9.17 (s, 1H), 8.69 (s, 1H), 7.85 (s, 1H), 7.56 (d, J=9 Hz, 1H), 7.43-7.48 (m, 1H), 7.30-7.36 (m, 3H), 6.19 (s, 1H), 3.99 (s, 6H), 1.49 (s, 6H); LC-MS (ESI) m/z 534 (M+H)+.

1. customSonication and filtration