Triarylamine processes

Details Triarylamine processes Triarylamine processes

1996-02-29

1997-08-05

Raymond, Richard L.

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

Organic compounds

Amino nitrogen containing

C07C20910

Patent

active

056544820

ABSTRACT:
An Ullmann condensation process for the preparation of triarylamines which comprises the reaction of an aniline and a halobenzene in the presence of a an organic solvent, an alkali metal hydroxide, a ligated copper catalyst and wherein the ligand is selected from the group consisting of monodentate tertiary amines and bidentate tertiary amines, and which reaction is accomplished at a temperature of from about 120.degree. to about 135.degree. C.

REFERENCES:
patent: 4265990 (1981-05-01), Stolka et al.
patent: 4299983 (1981-11-01), Martin et al.
patent: 4764625 (1988-08-01), Turner et al.
patent: 4801517 (1989-01-01), Frechet et al.

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