反应详情

6-(6,7-Dimethoxyquinolin-4-yloxy)benzofuran-3-carboxylic acid (31 mg, 0.085 mmol) and 2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate (41 mg, 0.127 mmol) were added to a reaction tube then dissolved in DMF (0.6 mL). 4-chloroaniline (13 mg, 0.102 mmol) was added to the reaction mixture, followed by N,N-diisopropylethylamine (22 mg, 0.17 mmol) and stirring was continued for 2 days. The mixture was concentrated in vacuo. The remaining orange oil was purified by silica gel chromatography (1% to 2% methanol in dichloromethane) to afford N-(4-chlorophenyl)-6-(6,7-dimethoxyquinolin-4-yloxy)benzofuran-3-carboxamide as a yellow solid (5 mg). MS (ESI, pos. ion) m/z: 475.1 (M+1). Mass calc'd for C26H19ClN2O5: 474.89.

1. concentrationThe mixture was concentrated in vacuo
2. customThe remaining orange oil was purified by silica gel chromatography (1% to 2% methanol in dichloromethane)