Cesium carbonate → Methyl 7-[4-({[3-(2,6-dichlorophenyl)-5-(1-methylethyl)-4-isoxazolyl]methyl}oxy)phenyl]-1-naphthalenecarboxylate

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Reaction Steps

A solution of 4-(chloromethyl)-3-(2,6-dichlorophenyl)-5-(1-methylethyl)isoxazole (0.11 g, 0.36 mmol), methyl 7-(4-hydroxyphenyl)-1-naphthalenecarboxylate (0.083 g, 0.30 mmol), and cesium carbonate (137 mg, 0.42 mmol) in dimethylformamide (0.73 mL) was heated to 65° C. for 3 hours. The solution was partitioned between ethyl acetate and water. The organic layer was dried with magnesium sulfate, filtered, and concentrated. The filtrate was purified by chromatography (silica gel, hexane to 1:4 ethyl acetate:hexanes) to provide the title compound (0.123 g, 75%). 1H NMR (DMSO-d6): 8.93 (s, 1H), 8.19-8.14 (m, 2H), 8.07 (d, J=9 Hz, 1H), 7.84 (dd, J=2, 9 Hz; 1H), 7.63 (d, J=8 Hz, 4H), 7.59-7.52 (m, 2H), 6.93 (d, J=9 Hz, 2H), 4.87 (s, 2H), 3.93 (s, 3H), 3.46 (septet, J=7 Hz, 1H), 1.33 (d, J=7 Hz, 6H). ESI LCMS m/z 546 (M+H)+.

Provenance & Evidence