Improved method for the preparation of 1,4-cineole
US4831163A · kind A · utility
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15Claims
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Key dates
| Filing date | Jul 24, 1987 |
| Grant date | May 16, 1989 |
| Priority date | — |
| Expiry date | Jul 24, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D493/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method is provided for preparing cineole in an improved yield and with increased 1,4- isomer content, by reaction of terpin hydrate or terpineol with an acid, such as phosphoric acid, with distillation of the cineole from the reaction mixture as the cineole is formed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.