Process for the preparation of urethanes
US4687872A · kind A · utility
3Cited by
4References
24Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Dec 9, 1985 |
| Grant date | Aug 18, 1987 |
| Priority date | — |
| Expiry date | Dec 9, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C271/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for preparing urethanes by reacting a solution of a nitrogen-containing organic compound and a hydroxyl-containing organic compound with carbon monoxide in the presence of a catalyst comprising rhodium, as a metal or compound, is disclosed. In the process of this invention, the rate of conversion and selectivity to urethane is increased by providing a rhodium catalyst comprising a polyamino ligand having at least two tertiary amino groups capable of coordinating with rhodium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.