3-Fluorobenzyl bromide → 6-Fluoro-1-(3-fluorobenzyl)-4-[4-(furan-2-carbonyl)-piperazin-1-yl]-2-oxo-1,2-dihydro-[1,8]-naphthyridine-3-carboxylic Acid Ethyl Ester

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Reaction Steps

This compound was prepared from 6-fluoro-4-[4-(furan-2-carbonyl)-piperazin-1-yl]-2-oxo-1,2-dihydro-[1,8]-naphthyridine-3-carboxylic acid ethyl ester (81) and 3-fluorobenzyl bromide according to General Procedure B. Yield 421 mg (49%), MP 121° C.; 1H-NMR (DMSO-d6): δ 1.27 (t, J=7.2 Hz, 3H), 3.15 (m, 4H), 3.92 (m, 4H), 4.29 (q, J=7.2 Hz, 2H), 5.53 (s, 2H), 6.65 (dd, J=1.6, 3.2, Hz, 1H), 7.05 (m, 4H), 7.33 (m, 1H), 7.87 (d, J=1.6 Hz, 1H), 8.18 (dd, J=2.8, 8.8 Hz, 1H), 8.73 (d, J=2.8 Hz, 1H); EIMS: 523 (M+1). Anal. (C27H24F2N4O5) C, H, N.

Provenance & Evidence