Patent ID: 6103659
Filing Date: 2000-08-15
Classification: B01J,C07B,C07C

Abstract:
A 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 the componenta) is an amidophosphonium salt of the formula (I): ##STR8## 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.-- is a monovalent acid anion or the equivalent of a polyvalent acid anion,b) is a quaternary ammonium compound of the formula (II): ##STR9## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are identical or different and are each a linear or branched alkoxypolyoxyalkyl radical of the formula --(C.sub.m H.sub.2m O).sub.p R.sup.5, where R.sup.5 is a linear or branched alkyl radical having from 1 to 16 carbon atoms or C.sub.1 -C.sub.4 -alkylaryl, m is an integer from 1 to 10, and p is a number from 1 to 15; or a linear or branched alkyl radical having from 1 to 30 carbon atoms; or an unsubstituted phenyl or naphthyl radical; or a substituted phenyl or naphthyl radical, where the substituents are halogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, nitro, CF.sub.3 or cyano; andX.sup..crclbar. is an anion;andc) is a quaternary phosphonium compound of the formula (III): ##STR10## where R.sup.6, R.sup.7, R.sup.8 and R.sup.9 are identical or different and are each a linear or branched alkyl radical having from 1 to 22 carbon atoms; or an unsubstituted or substituted aryl radical or a C.sub.1 -C.sub.4 -alkylaryl radical, where aryl is phenyl or naphthyl and said substituents are halogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, nitro or cyano;X.sup..crclbar. is as defined above; andd) is a crown ether or a polyether of the formula (IV):R.sup.10 --(O--C.sub.x H.sub.2x).sub.r --OR.sup.11 (IV),whereR.sup.10 and R.sup.11 are identical or different and are each a linear or branched alkyl radical having from 1 to 16 carbon atoms;x is an integer from 2 to 6 andr is a number from 0 to 20.