Process for the preparation of 8-ethylenic carbonyl compounds
US4421934A · kind A · utility
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8Claims
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Key dates
| Filing date | Mar 5, 1982 |
| Grant date | Dec 20, 1983 |
| Priority date | — |
| Expiry date | Mar 5, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/512
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Process for the preparation of .delta.-ethylenic carbonyl compounds of the formula (I) by the oxy-Cope rearrangement of a diethylenic alcohol of the formula (II), in the presence of a mercuric salt: in formulae (I) and (II), R.sub.1, R.sub.2, R.sub.4, R.sub.5 and R.sub.6, which are identical or different, represent a hydrogen atom or an acyclic hydrocarbon radical and R.sub.3 represents an acyclic hydrocarbon radical, it being understood that R.sub.1 and R.sub.3 can together form a trimethylene radical, or alternatively that R.sub.3 and R.sub.4 can together form an alkylene radical containing 3 to 20 carbon atoms. ##STR1##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.