Method for producing optically active lactone compounds by using salen cobalt complexes having a cis-&bgr; structure
US6713435B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2002 |
| Grant date | Mar 30, 2004 |
| Priority date | — |
| Expiry date | Sep 3, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2531/845
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for producing an optically active lactone compound by Baeyer-Villiger oxidation of a cyclic ketone compound with at least one kind of oxidants selected from the group consisting of hydrogen peroxide and urine-hydrogen peroxide adduct (UHP) using a cobalt(salen) complex having a cis-&bgr; structure expressed by the following formula (I) or (II) as a catalyst. in which X and Y independently denote H, a t-butyl group or an electron-withdrawing substituting group and W is a halogen element. in which X and Y independently denote H, a t-butyl group or an electron-withdrawing substituting group and Z− is a monovalent anion. The optically active lactone compounds can be used for the synthesis of medicines and argochemicals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.