[NH2:1][C:2]1[CH:7]=[C:6]([Cl:8])[N:5]=[C:4]([C:9]([O:11][CH3:12])=[O:10])[CH:3]=1.[Cl:13]N1C(=O)CCC1=O.C(=O)(O)[O-].[Na+].O>CN(C)C=O>[NH2:1][C:2]1[C:7]([Cl:13])=[C:6]([Cl:8])[N:5]=[C:4]([C:9]([O:11][CH3:12])=[O:10])[CH:3]=1The compound prepared in Example 404 (3.120 g) and N-chlorosuccinimide (2.456 g) were suspended in dimethyl formamide (100 mL) and stirred at 50° C. overnight. The reaction mixture was heated at 70° C. for a further 3 hours. The reaction mixture was added drop-wise to a stirred solution of 1:1 saturated aqueous sodium bicarbonate and water. The slurry was filtered and the solids dried under high vacuum to furnish the title compound (2.438 g), possessing the following physical data.
Wird geladen…