[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([NH:8][C:9]([C:11]2[CH:20]=[CH:19][C:18]3[C:13](=[C:14]([OH:21])[CH:15]=[CH:16][CH:17]=3)[N:12]=2)=[NH:10])=[CH:4][CH:3]=1.[C:22]([O-])([O-])=O.[K+].[K+].IC>CN(C=O)C.C([O-])(O)=O.[Na+]>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([NH:8][C:9]([C:11]2[CH:20]=[CH:19][C:18]3[C:13](=[C:14]([O:21][CH3:22])[CH:15]=[CH:16][CH:17]=3)[N:12]=2)=[NH:10])=[CH:4][CH:3]=1A mixture of 0.10 g (0.33 mmol) of N-(4-chloro-phenyl)-8-hydroxy -quinoline-2-carboxamidine, 0.137 g (1 mmol) of K2CO3 and 0.021 g (0.33 mmol) of iodomethane in 3.5 mL of DMF was heated under microwave (100 W, 5 min). It was diluted with 20 mL of NaHCO3, extracted with three 10 mL portions of ether. The combined organic extracts were washed with 10 mL of brine, dried over Na2SO4, filtered and concentrated. The residue was purified by preparative TLC eluting with 20% ethyl acetate in hexanes to give 0.047 g of N-(4-chloro-phenyl)-8-methoxy -quinoline-2-carboxamidine.
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