[CH3:1][C:2]([NH:7][C:8]1[CH:13]=[C:12]([Cl:14])[CH:11]=[CH:10][C:9]=1[N+:15]([O-])=O)([CH3:6])[C:3]([OH:5])=[O:4].[H][H]>O1CCCC1.[Ni]>[CH3:6][C:2]([NH:7][C:8]1[CH:13]=[C:12]([Cl:14])[CH:11]=[CH:10][C:9]=1[NH2:15])([CH3:1])[C:3]([OH:5])=[O:4]Using a one-liter autoclave, 53.4 g (0.206 mol) of 2-methyl-(5'-chloro-2'-nitroanilino)-propionic acid in solution in 500 ml of tetrahydrofuran are hydrogenated in the presence of 17 g of Raney nickel. Hydrogen pressure in the cold: 120 kg. Temperature 60° C. Duration: 1 hour. Pressure drop:
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