[N+:1]([C:4]1[CH:13]=[CH:12][CH:11]=[C:10]2[C:5]=1[CH:6]=[CH:7][CH:8]=[C:9]2[NH2:14])([O-])=O.[H][H]>C1(C)C=CC=CC=1.[Pd]>[C:4]1([NH2:1])[C:5]2[CH:6]=[CH:7][CH:8]=[C:9]([NH2:14])[C:10]=2[CH:11]=[CH:12][CH:13]=18.20 g of 5-nitro-1-naphthylamine (43.6 mmol) in 35 ml of toluene are placed in a 0.1 liter autoclave with 0.5 g of palladium on carbon (5%) and hydrogenated at 50° C. and 40 bar hydrogen pressure for 5 h, stirring. On completion of the reaction, the cooled autoclave is depressurised and the catalyst is filtered off. With a quantitative conversion, 6.72 g of 1,5-naphthalenediamine (42.5 mmol, 97.5%) are formed.
Wird geladen…