Method for preparing epsilon-caprolactone
US10710974B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2016 |
| Grant date | Jul 14, 2020 |
| Priority date | — |
| Expiry date | Dec 7, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07B41/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention discloses a method for preparing ε-caprolactone. The method comprises the steps of: adding cyclohexanone, a co-oxidant and a certain amount of catalyst into a certain amount of organic solvent, using molecular oxygen as an oxidant, implementing a reaction with stirring for 0.1 to 24 hours under a pressure of 0.1 to 2 MPa and at a temperature of 60° C. to 100° C., wherein the co-oxidant is acrolein, and the catalyst is a carbon material. The present invention has the advantages of high-efficiency co-oxidant, easily available and recovered catalyst, environmental-friendly oxidant, simple operation and low cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.