Arylamine processes
US5723671A · kind A · utility
79Cited by
7References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 1997 |
| Grant date | Mar 3, 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 an aminobiphenyl and an iodoxylene in the presence of a ligand 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.