Preparation of unsaturated compounds
US4693849A · kind A · utility
4Cited by
1References
7Claims
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Key dates
| Filing date | Sep 13, 1985 |
| Grant date | Sep 15, 1987 |
| Priority date | — |
| Expiry date | Sep 13, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/673
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Unsaturated compounds of the formula: ##STR1## in which: Q denotes alkyloxycarbonyl, cyano or formyl, R.sub.1 denotes a saturated or unsaturated aliphatic radical, R.sub.2 denotes a hydrogen atom or an alkyl radical, R.sub.3 denotes a hydrogen atom or an aliphatic radical and R.sub.4 denotes a hydrogen atom or a saturated or unsaturated aliphatic radical which may be substituted, are useful as intermediates in the synthesis of vitamin E.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.