Fluoro-containing 1-arylalkoxytris(dialkylamino)phosphonium salt, a process for their preparation and their use

US4966987A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Alfred Kruse · Kelkheim, DE
• Gunter Siegemund · Hofheim, DE
• Axel Schumann · Bornheim, DE
• Ingo Ruppert, deceased · Bonn, DE

Key dates

• Filing date: Jan 17, 1989
• Grant date: Oct 30, 1990
• Expiry date: Jan 17, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C17/361
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

1-Arylalkoxy-tris(dialkylamino)phosphonium salts of the formula I ##STR1## wherein the substituents R.sup.1 to R.sup.5 are equal or different and represent hydrogen, alkyl having from 1 to 6 carbon atoms which may be perfluorinated, halogen, alkoxy or alkylthio, each having from 1 to 6 carbon atoms, Y represents hydrogen or a perfluoroalkyl group C.sub.n F.sub.2n+1 having from 1 to 6 carbon atoms, X represents bromine or iodine and "Alkyl" represents an alkyl group of 1 to 3 carbon atoms, at most 3, preferably at most 2, of the groups R.sup.1 to R.sup.5 having a meaning other than hydrogen and the alkyl, alkoxy and alkylthio substituents attached to the aromatic nucleus altogether containing preferably at most 6 carbon atoms, in particular at most 4 carbon atoms. The invention also relates to a process for the preparation of the afore-mentioned phosphonium salts and to the use of the compounds of the formula I for the preparation of aromatic compounds having partly fluorinated groups of the formula V ##STR2## in which R.sup.1 to R.sup.5, X and Y have the afore-mentioned meaning, X can however also be hydrogen.