CATALYST CONTAINING AMIDOPHOSPHONIUM SALTS FOR FLUORINE-HALOGEN EXCHANGE REACTIONS Russian patent published in 2003 - IPC

FIELD: organic synthesis catalysts. SUBSTANCE: catalyst for fluorine-halogen exchange reactions of aromatics consists of mixture of at least one compound "a" and at least one compound "b" or compound "c", or compound "d", compound "a" being amidophosphonium salt of formula: , in which A¹,A²,A³,A⁴,A⁵,A⁶,A⁷,A⁸, independent from each other, are the same or different linear or branched alkyl or alkenyl having 1 to 12 carbon atoms and B^- denotes halogen anion; compound "b" is quaternary ammonium salt; "c" quaternary phosphonium salt; and "d" is a crown ether or mixture of polyethylene glycol dimethyl ethers. EFFECT: increased catalytic activity and stability of catalyst. 8 cl, 4 tbl, 14 ex