Bromomethyl 4-methoxyphenyl ketone → HCID 482688, compound

Participants

Reaction Steps

To a solution of the 1-(4-nitro-2-fluorophenyl)-6-fluoro-7-(1-piperazinyl)-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid (0.43 g, 1 mmol) in DMF (15 ml) was added 2-bromo-4′-methoxyacetophenone (0.29 g, 1.28 mmol) and sodium bicarbonate (0.08 g, 1 mmol). The reaction mixture was stirred for 24 hr at room temperature. After removing the solvent, the residue was taken up by CH2Cl2, solution, and after washed with water and dried with Na2SO4, was evaporated to dryness. Crystallization of the solid residue from CH2Cl2/methanol (10:1) afforded the desired 1-(4-nitro-2-fluorophenyl)-6-fluoro-7-{4-[2-(4-methoxyphenyl)-2-oxoethyl]-1-piperazinyl}-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (0.37 g, 86%). Mp: 136° C. (dec). 1H NMR (DMSO-d6) δ 2.63 and 3.10 (two m, 8),3.81-3.83 (m, 5H) 6.40 (d, 1H, J=6.8), 7.01 (d, 2H, J=9.0), 7.94-8.03 (m, 3H), 8.17-8.56 (m, 3H), 8.93 (s, 1H), 14.88 (br s, 1H). Anal. Calcd. for C29H24F2N4O7•H2O: C, 58.39; H, 4.39; N, 9.39. Found: C, 58.75; H, 4.42; N, 9.20.

Provenance & Evidence