Method for the preparation of esters of carbonic acid
US4218391A · kind A · utility
43Cited by
4References
7Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 5, 1979 |
| Grant date | Aug 19, 1980 |
| Priority date | — |
| Expiry date | Mar 5, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C68/01
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Carbonic acid esters are prepared by reacting the alcohol concerned with oxygen and carbon monoxide in the presence of a catalyst which is a salt of a metal belonging to the Groups IB, IIB and VIII of the Periodic Table: the least possible number of inorganic anions is desirable in order to reduce the acidity of the environment as far as possible. The salts of monovalent copper are preferred and high yields and selectivities are obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.