1144513-40-5Relevant articles and documents
Behaviour of dimeric methylrhenium(VI) oxides in the presence of hydrogen peroxide and its consequences for oxidation catalysis
Rost, Alexandra M. J.,Scherbaum, Andrea,Herrmann, Wolfgang A.,Kuehn, Fritz E.
, p. 1599 - 1605 (2006)
Avoiding the use of toxic methyltin precursors to synthesize methyltrioxorhenium (MTO) and its mono- and bis-peroxo derivatives, applicable as oxidation catalysts, dimethyl zinc might be considered a promising alternative alkylating agent. However, the methylrhenium(vi) dimers, formed as reduction products alongside MTO during the reaction of dimethyl zinc with Re2O7, are not as straightforwardly transformed into the epoxidation catalysts as MTO itself in the presence of excess H 2O2. In the case of red (μ-oxo) bis[trimethyloxorhenium(vi)], the main reaction product with H2O 2 is the catalytically inactive trimethyldioxorhenium(vii). In the case of bis[dimethyl(μ-oxo)oxorhenium(vi)], slow conversion to the monomeric mono- and bis-peroxo congenes of MTO occurs. Furthermore, part of the Re(vi) starting complex is transformed into inactive perrhenate. While bis[dimethyl(μ-oxo)oxorhenium(vi)] might be applied (also in a mixture with MTO) as an oxidation catalyst precursor, (μ-oxo)bis[trimethyloxorhenium(vi)] can be applied as a useful precursor for the synthesis of trimethyldioxorhenium(vii), which was previously only accessible by less convenient synthetic pathways. the Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2006.
