Water → Methyl 5-(2-chlorophenyl)-1-(2,6-dichlorophenyl)-2-oxo-1,2-dihydroquinoline-7-carboxylate

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Reaction Conditions

Reaction Steps

To 5-(2-chlorophenyl)-1-(2,6-dichlorophenyl)-2-oxo-1,2-dihydroquinoline-7-carboxamide (920 mg) in dioxane (330 mL) was added 5N NaOH (10 mL) and water (41 mL) followed by sodium hypochlorite (19.3 mL of a 10-13% aqueous solution) and the reaction mixture heated to 60° C. for 2 h. The cooled reaction mixture was then poured into brine and extracted into ethyl acetate, dried over MgSO4 and concentrated. The residue was purified by silica gel chromatography eluting with hexane/ethyl acetate to give the title compound. 1H NMR (500 MHz, CDCl3): δ 7.61-7.32 (m, 8H); 6.48 (d, J=2.1 Hz, 1H); 6.45 (d, J=9.7 Hz, 1H); 5.73 (d, J=2.1 Hz, 1H; 4.00 (br.s, 2H). Mass spectrum: m/z 415 (M+H).

Provenance & Evidence