Process for the production of aromatic carbamates
US5698731A · kind A · utility
15Cited by
7References
10Claims
0Family size
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Key dates
| Filing date | Jun 27, 1996 |
| Grant date | Dec 16, 1997 |
| Priority date | — |
| Expiry date | Jun 27, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C269/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process is described for the preparation of aromatic carbamates in which an organic carbonate in a stoichiometric quantity or in a quantity higher than the stoichiometric value is reacted with an aromatic amine operating in the presence of a carbamation catalyst, wherein this catalyst is selected from N,N-substituted carbamate complexes of zinc or copper. The process gives high yields and selectivity in the useful reaction product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.