Manufacture of an epoxyethyl carboxylate or glycidyl carboxylate
US9174955B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2011 |
| Grant date | Nov 3, 2015 |
| Priority date | — |
| Expiry date | Jan 26, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D303/48
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a process for the manufacture of an epoxyethyl carboxylate or glycidyl carboxylate, including reacting a vinyl carboxylate or an allyl carboxylate using an oxidant and a water-soluble manganese complex in an aqueous reaction medium, and the water-soluble manganese complex comprises an oxidation catalyst, characterized in that the water-soluble manganese complex is a mononuclear species of the general formula (I) [LMnX3]Y (I), or a binuclear species of the general formula (II): [LMn(μ-X)3MnL]Yn (II), wherein Mn is a manganese; L is a ligand and each L is independently a polydentate ligand, each X is independently a coordinating species and each μ-X is independently a bridging coordinating species, Y is a non-coordinating counter ion, and wherein the epoxidation is carried out at a pH in the range of from 1.0 to 7.0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.