C1N=CN(C(N2C=NC=C2)=O)C=1.[N:13]1[C:22]2[C:17](=[CH:18][C:19]([C:23]([OH:25])=O)=[CH:20][CH:21]=2)[CH:16]=[CH:15][CH:14]=1.Cl.[CH3:27][NH:28][O:29][CH3:30]>CN(C=O)C.[Cl-].[Na+].O>[CH3:30][O:29][N:28]([CH3:27])[C:23]([C:19]1[CH:18]=[C:17]2[C:22](=[CH:21][CH:20]=1)[N:13]=[CH:14][CH:15]=[CH:16]2)=[O:25]CDI (25.8 g, 151 mmol) was added to a solution of 6-quinolinecarboxylic acid (25 g, 141 mmol) in DMF and the mixture stirred at rt for 10 min. N,O-dimethylhydroxylamine hydrochloride (14.1 g, 142 mmol) was added and the mixture stirred for an additional hour. Brine was then added and the mixture extracted with EtOAc. The organic extracts were dried, filtered and concentrated to give the title compound as a yellow oil (tR 0.2 min (conditions 2), MH+=217).
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