Polymer-supported copper complex for the direct synthesis of O-aryloxime ethers via cross-coupling of oximes and arylboronic acids

L-proline functionalized chloroacetylated polystyrene supported copper (II) complex was prepared and found to be effective for the cross-coupling reaction between aromatic oximes and arylboronic acids under mild conditions. Only catalytic amount of catalyst was required and no deoximation occurred. The catalyst could be recovered by simple filtration and reused several times without significant loss of activity.