Arylamine processes
US5705697A · kind A · utility
78Cited by
7References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 1997 |
| Grant date | Jan 6, 1998 |
| Priority date | — |
| Expiry date | Jan 30, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C209/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of N,N-bis(3,4-dimethylphenyl)-4-biphenylamine which comprises the reaction of N-(3,4-dimethylphenyl)-4-biphenylamine and an iodoxylene in the presence of 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. C. to about 150.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.