Process for preparing 4-amino-diphenylamine

Details Process for preparing 4-amino-diphenylamine Process for preparing 4-amino-diphenylamine

1974-10-22

1976-08-31

Curtis, Allen B.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 8502

Patent

active

039781313

ABSTRACT:
4-AMINO-DIPHENYLAMINE IS PREPARED BY CATALYTICALLY HYDROGENATING 4-NITROSO-DIPHENYLAMINE IN A WATER-IMMISCIBLE SOLVENT IN THE PRESENCE OF Raney nickel as a catalyst. The hydrogenation reaction is generally carried out at a temperature in the range of from 20.degree. to 150.degree.C and can be carried out under an elevated hydrogen pressure of up to 50 atmospheres.

REFERENCES:
patent: 2813124 (1957-11-01), Rice et al.
patent: 2822395 (1958-02-01), Dent
patent: 2974169 (1961-03-01), Newby
patent: 3055940 (1962-09-01), Merz
patent: 3281470 (1966-10-01), Vertnik
patent: 3781227 (1973-12-01), Sokolsh et al.

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