The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 12, 1995
Filed:
Apr. 04, 1994
Matthias Beller, Niedernhausen, DE;
Heinz Strutz, Frankfurt am Main, DE;
Hoechst Aktiengesellschaft, Frankfurt, DE;
Abstract
The present invention relates to a process for preparing vinyl-substituted aromatic compounds of the formula (I) Ar--CH.dbd.CH.sub.2, where Ar is a phenyl group that may bear 1 to 5 substituents, naphthyl or anthryl or a naphthyl radical bearing 1 to 7 substituents or an anthryl radical bearing 1 to 8 substituents, or a mononuclear five-, six- or seven-membered heterocyclic aromatic group which contains an oxygen atom and/or one or two nitrogen atoms in the ring and may bear 1 to 5 substituents, wherein an arylamine of the formula (II) Ar--NH.sub.2, where Ar has the aforementioned meaning, is reacted in an organic acid with an organic nitrite of the formula (III) R--ONO, where R is an alkyl group having 1 to 18 carbon atoms, a phenyl radical which may bear 1 to 3 alkyl groups each having 1 to 4 carbon atoms, or is an alkylcarbonyl group having 2 to 5 carbon atoms, and ethylene in an organic solvent in the presence of a palladium(0) of palladium(II) compound at temperatures of 0.degree. to 35.degree. C.