Process for the preparation of .alpha.-flurostyrene

US5313001A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Walter Heitz · Kirchhain, DE
• Arno Knebelkamp · Essen, DE

Key dates

• Filing date: Nov 17, 1992
• Grant date: May 17, 1994
• Expiry date: Nov 17, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C17/269
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Process for the preparation of .alpha.-fluorostyrene from fluoroolefins: ##STR1## Z=hydrogen, fluorine, chlorine X=iodine, bromine, chlorine. A halogenated aromatic (I) is reacted with a fluorine-substituted ethylene (II) in the presence of a palladium catalyst to give an .alpha.-fluorostyrene (III), it being possible for R to be a hydrogen atom, a halogen atom, a C.sub.1 -C.sub.4 -alkyl group, a C.sub.1 -C.sub.5 -alkoxy group, an amino, alkylamino or dialkylamino group, an aryl radical or a fused aryl or heteroaryl ring, a hydroxyl or hydroxyalkyl group, a trifluoromethyl or perfluoroalkyl group or a nitro group.