F[C:2]1[CH:7]=[CH:6][C:5]([N+:8]([O-:10])=[O:9])=[CH:4][CH:3]=1.[CH3:11][N:12]([CH3:23])[CH2:13][CH2:14][NH:15][S:16]([CH2:19][CH2:20][CH2:21][CH3:22])(=[O:18])=[O:17].[H-].[Na+]>>[CH3:11][N:12]([CH3:23])[CH2:13][CH2:14][N:15]([C:2]1[CH:7]=[CH:6][C:5]([N+:8]([O-:10])=[O:9])=[CH:4][CH:3]=1)[S:16]([CH2:19][CH2:20][CH2:21][CH3:22])(=[O:18])=[O:17]Prepared from 1-fluoro-4nitro-benzene, N-(2-dimethylamino-ethyl)-butanesulphonamide and sodium hydride as base
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