Process of producing adamantanols
US6187967A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2000 |
| Grant date | Feb 13, 2001 |
| Priority date | — |
| Expiry date | Jan 28, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2603/74
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Adamantanols are produced in high selectivity and high yields by hydroxylation of adamantane compounds in a specific two-phase solvent system of water and an organic solvent in the presence of a ruthenium compound and hypochlorous acid or its salt. Adamantanediols transfer into the organic phase by adding a specific alcohol to a reaction liquid containing the adamantanols, thereby facilitating extraction of the adamantanediols. The ruthenium compound transfers into the water phase by treating the reaction liquid with alkali prior to the addition of the alcohol and precipitates therein, thereby facilitating the recovery of the ruthenium compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.