Synthesis of dialkyl carbonates
US6452036B1 · kind B1 · utility
1Cited by
1References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 2002 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | May 2, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C68/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention generally concerns methods for the synthesis of dialkyl carbonates, and more specifically dimethyl carbonate (DMC) and diethyl carbonate (DEC). Methods according to the invention generally comprise reacting an alcohol or diol, a base and a halogen in the presence of an amine salt catalyst thereby forming a first intermediate. The first intermediate is reacted with carbon monoxide forming a second intermediate which then reacts with the alcohol or diol in the presence of the amine salt catalyst forming the dialkyl carbonate product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.