Polymer-supported complexes. Part 3. Synthesis of a polystyreneanchored molybdenum(V) dithiocarbamato-derivative and its applications in reactions involving t-butyl hydroperoxide

Abstract

A dithiocarbamato-complex of Mo^V has been anchored on functionalised cross-linked polystyrene and characterised. Polymer-supported [Mo₂O₃(S₂CNEt₂)₄] has been used as the catalyst in the conversion of Me₂SO to Me₂SO₂ and cyclohexene to cyclohexene oxide with Bu^tO₂H. Although loss of metal ions from the polymer backbone is observed in both cases, prior activation of the polymer-supported species with Bu^tO₂H results in improved yields. Under identical conditions the polymer-supported system gave better yields of cyclohexene oxide than the homogeneous counterpart. These results are discussed in the light of reported mechanisms.