Oxalyl chloride → N-(5-(1,1-dimethylethyl)-3-isoxazolyl)-6-((3-fluoro-6,7-bis(methoxy)-4-quinolinyl)oxy)-1-naphthalenecarboxamide

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Reaction Conditions

Reaction Steps

Pyridine (1.0 mL) was added to a mixture of 6-(3-fluoro-6,7-dimethoxyquinolin-4-yloxy)-1-naphthoyl chloride (prepared from 6-(3-fluoro-6,7-dimethoxyquinolin-4-yloxy)-1-naphthoic acid and oxalyl chloride by the procedure described in Example 273) (0.044 g, 0.107 mmol) and 3-amino-5-t-butylisoxazole (0.075 g, 0.535 mmol). The mixture stirred at 80° C. for 10 h and was then cooled to RT. The mixture was concentrated and the residue was purified by preparative thin layer chromatography on silica gel plates (eluting with 5% MeOH—CH2Cl2). Further purification via preparative thin layer chromatography on silica gel plates (eluting with 90:10:1 CH2Cl2:MeOHl:NH4OH) afforded N-(5-(1,1-dimethylethyl)-3-isoxazolyl)-6-((3-fluoro-6,7-bis(methoxy)-4-quinolinyl)oxy)-1-naphthalenecarboxamide as an off-white solid. MS (ESI, pos. ion) m/z: 516.0 (M+H). Mass Calc'd for C29H26FN3O5: 515.5

Provenance & Evidence