Metal-catalyzed amination of organic sulfonates to organic amines
US5817877A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1997 |
| Grant date | Oct 6, 1998 |
| Priority date | — |
| Expiry date | Sep 19, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C209/18
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process of preparing an organic amine having at least one unsaturated group, such as an arylamine, involving contacting an unsaturated organic sulfonate, such as an aryl sulfonate, with a reactant amine, such as an alkyl or aryl amine, in the presence of a base and a transition metal catalyst under reaction conditions. The transition metal catalyst contains a Group 8 metal and a chelating ligand, for example a Group 15-substituted arylene or Group 15-substituted metallocene, such as 1,1'-bis(diphenylphosphino)-2,2'-binaphthyl or 1,1'-bis(diphenylphosphino)-ferrocene, respectively. The aryl sulfonate can be prepared from a phenol and sulfonating agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.