Catalyst comprising an amidophosphonium salt for halex reactions

US6103659A · kind A · utility

Assignee

• Aventis Research & Technologies GmbH & Co. · DE

Inventors

• Sergej Pasenok · Kelkheim, DE
• Wolfgang Appel · Kelkheim, DE
• Ralf Pfirmann · Griesheim, DE
• Thomas Wessel · Frankfurt, DE
• Thomas Schach · Gernsheim, DE
• Hans H. Schubert · Tokyo, JP

Key dates

• Filing date: Jul 21, 1999
• Grant date: Aug 15, 2000
• Expiry date: Jul 21, 2019

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2231/40
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Catalyst for halogen-fluorine exchange reactions on aromatics, consisting essentially of a mixture of one or more compounds of the component a) plus at least one compound of the components b), c) and/or d), wherein PA1 a) is an amidophosphonium salt of the formula (I) ##STR1## where A.sup.1, A.sup.2, A.sup.3, A.sup.4, A.sup.5, A.sup.6, A.sup.7, A.sup.8 are, independently of one another, identical or different and are each a straight-chain or branched alkyl or alkenyl having from 1 to 12 carbon atoms, cycloalkyl having from 4 to 8 carbon atoms, an aryl having from 6 to 12 carbon atoms, an aralkyl having from 7 to 12 carbon atoms, or A.sup.1 A.sup.2, A.sup.3 A.sup.4, A.sup.5 A.sup.6, A.sup.7 A.sup.8 are, independently of one another, identical or different and are in each case connected to one another either directly or via O or N--A.sup.9 to form a ring having from 3 to 7 ring atoms, A.sup.9 is an alkyl having from 1 to 4 carbon atoms and B.sup..crclbar. is a monovalent acid anion or the equivalent of a polyvalent acid anion, PA1 b) a quaternary ammonium salt, PA1 c) a quaternary phosphonium salt, and PA1 d) a crown ether or a polyether of the formula (IV): EQU R.sup.10 --(O--O.sub.…