[CH2:1]([O:3][C:4](Cl)=[O:5])[CH3:2].[CH:7]1[C:16]2[C:11](=[CH:12][CH:13]=[CH:14][CH:15]=2)[CH:10]=[CH:9][C:8]=1[NH2:17].C(=O)(O)[O-].[Na+]>C(Cl)(Cl)Cl.C(Cl)Cl.O>[CH2:1]([O:3][C:4]([NH:17][C:8]1[CH:9]=[CH:10][C:11]2[C:16](=[CH:15][CH:14]=[CH:13][CH:12]=2)[CH:7]=1)=[O:5])[CH3:2]A mixture of 16.7 g of ethoxycarbonyl chloride and 20 ml of methylene chloride is added dropwise to a mixture of 20.0 g of 2-naphthylamine, 17.6 g of sodium bicarbonate, 100 ml of water and 200 ml of methylene chloride under ice-cooling and stirring. The mixture is stirred overnight at room temperature. Chloroform is added to the mixture and the organic layer is separated, dried and treated with charcol. The residue is recrystallized from ethyl acetate-hexane to give 25.26 g of N-ethoxycarbonyl-2-naphthylamine.
Wird geladen…
