Diisopropylethylamine → N-(5-(6,7-dimethoxyquinolin-4-yloxy)pyridin-2-yl)-4-iodo-2-oxo-1-phenyl-1,2-dihydropyridine-3-carboxamide

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Reaction Steps

To a solution of 4-iodo-2-oxo-1-phenyl-1,2-dihydropyridine-3-carbonyl chloride (139 mg, 387 μmol) in dichloromethane (4 mL) at room temperature was added diisopropylethylamine (202 μl, 1160 μmol) followed by 5-(6,7-dimethoxyquinolin-4-yloxy)pyridin-2-amine (115 mg, 387 μmol). The reaction mixture was stirred at room temperature for 2 h. An aliquot was taken and analyzed by LCMS: reaction was done. The reaction mixture was diluted with methanol and directly adsorbed on silica. Purification by MPLC(CH2Cl2/MeOH: 100/0 to 96/4) afforded N-(5-(6,7-dimethoxyquinolin-4-yloxy)pyridin-2-yl)-4-iodo-2-oxo-1-phenyl-1,2-dihydropyridine-3-carboxamide (162 mg, 261 μmol, 68% yield for two steps). MS (ESI pos. ion) m/z: 621 (MH+). Calc'd exact mass for C28H26IN4O5: 620.

Provenance & Evidence