O-Toluidine → 3-Acetyl-4-(2-methylphenylamino)-8-methoxyquinoline
Reaction equation
[C:1]([C:4]1[CH:5]=[N:6][C:7]2[C:12]([C:13]=1Cl)=[CH:11][CH:10]=[CH:9][C:8]=2[O:15][CH3:16])(=[O:3])[CH3:2].[NH2:17][C:18]1[C:19]([CH3:24])=[CH:20][CH:21]=[CH:22][CH:23]=1>O1CCOCC1>[C:1]([C:4]1[CH:5]=[N:6][C:7]2[C:12]([C:13]=1[NH:17][C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][C:19]=1[CH3:24])=[CH:11][CH:10]=[CH:9][C:8]=2[O:15][CH3:16])(=[O:3])[CH3:2]Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
A mixture of crude 3-acetyl-4-chloro-8-methoxyquinoline (7.9 g) and o-toluidine (2 ml, 19 mmol) in dioxan (150 ml) was heated under reflux with stirring for 2 hours, then cooled and evaporated. Aqueous sodium bicarbonate was added, the mixture extracted with chloroform, and the organic extract dried and evaporated. Recrystallisation from ethyl acetate and then from ethanol gave 3-acetyl-4-(2-methylphenylamino)-8-methoxyquinoline (2.65 g, 44% from 3-acetyl-8-methoxy-4(1H)-quinolone), m.p. 171°-173°.