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 MoV 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 ButO2H. Although loss of metal ions from the polymer backbone is observed in both cases, prior activation of the polymer-supported species with ButO2H 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.