Process for preparing aldehydes
US6909019B1 · kind B1 · utility
2Cited by
6References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 25, 2004 |
| Grant date | Jun 21, 2005 |
| Priority date | — |
| Expiry date | Jun 4, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/515
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process is disclosed for preparing aldehydes by isomerization of the corresponding unsaturated primary alcohols using a transition metal catalyst system, in an alcoholic solvent and in the presence of an acid. An aldehyde forms by isomerizing an unsaturated primary alcohol under conditions that protect the newly formed aldehyde as a dialkylacetal in situ during the reaction. Protecting the aldehyde as an acetal allows for facile separation of the product from the catalyst as well as effectively driving the reaction toward completion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.