Nitrofen → 4-(2,4-Dichlorophenoxy)benzenamine
反応式
[Cl:1][C:2]1[CH:17]=[C:16]([Cl:18])[CH:15]=[CH:14][C:3]=1[O:4][C:5]1[CH:10]=[CH:9][C:8]([N+:11]([O-])=O)=[CH:7][CH:6]=1.O.O.Cl[Sn]Cl>CO>[Cl:1][C:2]1[CH:17]=[C:16]([Cl:18])[CH:15]=[CH:14][C:3]=1[O:4][C:5]1[CH:6]=[CH:7][C:8]([NH2:11])=[CH:9][CH:10]=1参加物
4
実験手順
The nitro intermediate (10 mmol) obtained above was dissolved in MeOH (20 mL), and treated with SnCl2.2H2O (50 mmol), according to General Procedure I. The reaction mixture was heated under reflux until completion, as indicated by TLC or HPLC. The solvent was removed in vacuuo and the residue was treated with 4.0 N aqueous NaOH to pH˜8. The residue was extracted with EtOAc (2×50 mL), washed with 1.0 N aqueous NaOH (50 mL), brine (50 mL) and dried over sodium sulfate. The solvent was removed in vacuuo to afford the desired 4-(2,4-dichloro-phenoxy)aniline, which was used directly for further transformation without further purification.