A manganese oxidation catalyst, a method for its preparation and use thereof for catalytic epoxidation, catalytic cis-dihydroxylation and combined expoxidation-cis-dihydroxylation of olefins

摘要

The invention relates to a novel manganese oxidation catalyst of the general formula: (LMnXn)S wherein: Mn is manganese; L is a triazacycloalkane, the carbon skeleton thereof comprising at least 6 C atoms; substituted on two of the three N atoms by a non coordinating substituent, and comprising a covalent link to a support S; X is a charge compensating anion selected from the group comprising: Cl<-,> Br<-,> F<-,> I<-,> CN<-,> NCS<-,> N3<-,> ClO4<-,> NO3<-,> RCOO<-,> RO<-,> OH<-,> O2<2>-, O<2>-, OOH<-,> SO4<2>-, HSO4<-,> PO4<3>-, HPO4<2>-<,> H2PO4<-,> RSO3<-,> RSO4<-,> B4O7<2>-, oxalate, fumarate, maleate, PF6<-,> BF4<-;> n has any value between 0 and 4; S is a solid support material, that is linked to L via a covalent tether, the support material being selected from the following groups: oxides, mixed oxides, zeolites, clays, soluble or insoluble organic polymers, or mixed organic-inorganic solids and to a method for its preparation and further to a method for epoxidation and/or dishydroxylation of olefins in the presence of such a catalyst.