Process for preparing diphenylamines

Details Process for preparing diphenylamines Process for preparing diphenylamines

1993-07-16

1994-09-06

Raymond, Richard L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

564396, 564397, 564398, 564431, 564433, C07C20924, C07C20972

Patent

active

053449878

ABSTRACT:
Optionally substituted diphenylamines can be obtained by reacting optionally substituted anilines with optionally substituted cyclohexanones over a supported catalyst at 200.degree.-450.degree. C. and 0.1-20 bar, the supported catalyst containing one or more metals having a dehydrogenating action selected from the group Ru, Pd, Os, Ir, Pt, Fe, Co, Ni, Re, Mn, Cu, Ag, Cr and Ce.

REFERENCES:
patent: 3219702 (1965-11-01), Van Verth et al.
patent: 3219704 (1965-11-01), Wilder et al.
patent: 4057581 (1977-11-01), Krall et al.
patent: 4429157 (1984-01-01), Disteldorf et al.
patent: 4729977 (1988-03-01), Immel et al.
patent: 4902661 (1990-02-01), Immel et al.
patent: 5196592 (1993-03-01), Immel et al.

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