Process for the production of substituted vinylbenzenes
US5274176A · kind A · utility
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11Claims
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Key dates
| Filing date | Oct 21, 1992 |
| Grant date | Dec 28, 1993 |
| Priority date | — |
| Expiry date | Oct 21, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C69/017
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the production of substituted vinylbenzenes of the general formula: ##STR1## wherein R is a lower alkyl group having 1 to 4 C atoms, R.sub.1 is hydrogen or an acetyl group and R.sub.2 is hydrogen, a lower alkyl group having 1 to 4 C atoms or a benzyl group. A trialkylhydroquinone is cyclized with an aldehyde to an acetal and the latter is pyrolized to the endproduct. The substituted vinylbenzenes are valuable intermediate products in the synthesis of antioxidants.
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