Benzyl Bromide → 1-Benzyl-6-fluoro-2-oxo-4-[4-(thiophene-2-carbonyl)-piperazin-1-yl]-1,2-dihydro-[1,8]-naphthyridine-3-carboxylic Acid Ethyl Ester

HRID 901261

Reaction equation

HRID 901261 reaction equation
[CH2:1]([O:3][C:4]([C:6]1[C:7](=[O:30])[NH:8][C:9]2[C:14]([C:15]=1[N:16]1[CH2:21][CH2:20][N:19]([C:22]([C:24]3[S:25][CH:26]=[CH:27][CH:28]=3)=[O:23])[CH2:18][CH2:17]1)=[CH:13][C:12]([F:29])=[CH:11][N:10]=2)=[O:5])[CH3:2].[CH2:31](Br)[C:32]1[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=1>>[CH2:1]([O:3][C:4]([C:6]1[C:7](=[O:30])[N:8]([CH2:31][C:32]2[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=2)[C:9]2[C:14]([C:15]=1[N:16]1[CH2:21][CH2:20][N:19]([C:22]([C:24]3[S:25][CH:26]=[CH:27][CH:28]=3)=[O:23])[CH2:18][CH2:17]1)=[CH:13][C:12]([F:29])=[CH:11][N:10]=2)=[O:5])[CH3:2]

Participants

3

Procedure

This compound was prepared from 6-fluoro-2-oxo-4-[4-(thiophene-2-carbonyl)-piperazin-1-yl]-1,2-dihydro-[1,8]-naphthyridine-3-carboxylic acid ethyl ester (80) and benzyl bromide according to General Procedure B. Yield 152 mg (21%), MP 130° C.; 1H-NMR (DMSO-d6): δ 1.28 (t, J=7.2 Hz, 3H), 3.15 (m, 4H), 3.90 (m, 4H), 4.32 (q, J=7.2 Hz, 2H), 5.55 (s, 2H), 7.14-7.30 (m, 6H), 7.45 (d, J=3.6 Hz, 1H), 7.80 (d, J=4.8 Hz, 1H), 8.16 (dd, J=2.8, 8.8 Hz, 1H), 8.74 (d, J=2.8 Hz, 1H); EIMS: 521 (M+1). Anal. (C27H25FN4O4S) C, H. N.

Sources & evidence

ORD record
ord-37823d1a3ecd455aaa973cbdd23c2330
Source dataset
uspto-grants-2008_04
Patent number
US07361760B2

Linked notes

Loading…