Water → Ethyl 6-[4-({[3-(2,6-dichlorophenyl)-5-(1-methylethyl)-4-isoxazolyl]methyl}oxy)-3-methylphenyl]-2-quinolinecarboxylate

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Reaction Steps

Cesium carbonate (54.9 mg, 168.6 μmol) was added to ethyl 6-(4-hydroxy-3-methylphenyl)-2-quinolinecarboxylate (47.1 mg, 153.3 μmol) and 4-(chloromethyl)-3-(2,6-dichlorophenyl)-5-(1-methylethyl)isoxazole (51.3 mg, 168.6 μmol) in N,N-dimethylformamide (3.1 mL) at room temperature. The resulting suspension was stirred for twenty hours, then water was added and the reaction mixture was extracted with ethyl acetate. The organic layer was dried over anhydrous magnesium sulfate, then filtered and concentrated. The residue was purified by silica gel chromatography eluting with 3:7 ethyl acetate:hexanes to give 19.1 mg (22%) of ethyl 6-[4-({[3-(2,6-dichlorophenyl)-5-(1-methylethyl)-4-isoxazolyl]methyl}oxy)-3-methylphenyl]-2-quinolinecarboxylate as an oil. 1H NMR (400 MHz, d6-DMSO): δ 8.56 (d, J=9 Hz, 1H), 8.28 (s, 1H), 8.19-8.09 (m, 3H), 7.66-7.59 (m, 4H), 7.55 (dd, J=9, 7 Hz, 1H), 7.09 (d, J=9 Hz, 1H), 4.91 (s, 2H), 4.42 (q, J=7 Hz, 2H), 3.52 (septet, J=7 Hz, 1H), 1.97 (s, 3H), 1.38 (t, J=7 Hz, 3H), 1.36 (d, J=7 Hz, 6H). ESI-LCMS m/z 575 (M+H)+.

Provenance & Evidence