Polymer-supported metal complex oxidation catalysts

Bbstract Recent developments involving polymer-supported metal complexes as catalysts in oxidation reactions, using dioxygen, hydrogen peroxide, alkyl hydroperoxides, hypochlorite anion and iodosobenzene as oxidants are reviewed. binding of dioxygen, and in catalysis, along with the structurally closely related metallo-phthalocyanines, oxidative polymerization catalysed by polymer-supported copper (11) complexes is reviewed along with more recent developments of supported palladium (11) Yacker-type catalysts. Novel Nafion supported rhodium (III), chromium (111) and cerium (IV) complexes are described and their potential for application in hostile chemical environments emphasised. Alkene epoxidations using t-butyl hydroperoxide catalysed by polymersupported vanadium (V) and molybdenum (VI) species are dealt with in some detail because of the industrial potential of these systems, and the recent advances reported in the literature. Finally polymer-supported arsenic, selenium and tellurium based catalysts are described. Though not strictly metal complexes, these are very closely related to metal complex catalysed hydrogen peroxide oxidations. Supported metallo-porphyrins are described for the reversible