Process for the selective addition of a compound having an activated carbon atom onto a substituted conjugated diene
US4460786A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 7, 1983 |
| Grant date | Jul 17, 1984 |
| Priority date | — |
| Expiry date | Jun 7, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The selective addition of a compound having an activated carbon atom onto the carbon atom in the 4-position of a buta-1,3-diene carrying a hydrocarbon substituent on the carbon atom in the 2-position is achieved by reacting the compound having the activated carbon atom with the buta-1,3-diene carrying the hydrocarbon substituent in water or in an aqueous-alcoholic mixture in the presence of a catalyst which consists of at least one water-soluble phosphine and at least one rhodium compound, the catalyst being in solution in the water or aqueous alcoholic mixture. The products obtained are useful as precursors of intermediates for the synthesis of vitamins and perfumes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.