Process for preparing triphenylamine compounds by using a nitrog

Details Process for preparing triphenylamine compounds by using a nitrog Process for preparing triphenylamine compounds by using a nitrog

1999-03-30

2000-02-08

Killos, Paul J.

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

Organic compounds

Amino nitrogen containing

C07C20900

Patent

active

060229977

ABSTRACT:
This invention provides a process for the preparation of triphenylamine compounds useful as charge transport materials. According to this process, a triphenylamine compound of the general formula (2) ##STR1## of the general formula (1) ##STR2## into a lithio compound, and reacting the lithio compound with a nitrogen trihalide. In the above formulae, Ar.sub.1 to Ar.sub.8 each represent an optionally substituted phenyl radical, R.sub.1 to R.sub.8 each represent a hydrogen atom or a methyl group, and X represents a halogen atom.

REFERENCES:
patent: 3820989 (1974-06-01), Rule et al.
patent: 4769302 (1988-09-01), Ueda
patent: 5733697 (1998-03-01), Endoh et al.
Kovacic, P., et al., "Chemistry of N-Halamines: Amination of Alkyl Halides with Trichloramine-Aluminum Chloride," J. Org. Chem., vol. 34, No. 4, pp. 911-917 (1969).

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