Process for the preparation of an allyl aryl ether by catalytic o-allylation

摘要

The invention provides a process for the preparation of an allyl aryl ether comprising the O-allylation of an aromatic hydroxyl containing compound with an allyl source in the presence of a catalyst, wherein the catalyst is a transition metal complex with a phosphine ligand, and wherein the phosphine ligand is- either a monodentate phosphine P(X)₃, wherein each X independently is a an aliphatic substituent having from 1 to 9 carbon atoms, a cycloaliphatic substituent having from 5 to 9 carbon atoms or aromatic substituent having from 6 to 9 carbon atoms, or wherein two substituents X together form a divalent alkylene group, with from 3 up to 6 carbon atoms,- or a bidentate diphosphine X₂P-R-PX₂ wherein each X has the same meaning as defined for the monodentate phosphine , wherein the divalent alkylene group is attached to the same or different phosphorus atom(s), and R is a bridging group having at least 4 bridging atoms between the phosphorus atoms,wherein the O-allylation is carried out in the presence of an acid in an amount of at least 0.1 mol% calculated on the aromatic hydroxyl containing compound.;This invention further provides a process for the preparation of epoxy resins wherein as intermediate use is made of the allyl aryl ethers prepared by the process of the invention.