Metathesis methyltrioxorhenium

F. E. Kuhn, A. Scherbaum, and W. A. Flerrmann, Methyltrioxorhenium and Its Applications in Olefin Oxidation, Metathesis and Aldehyde Olefination, J. Organomet. Chem. 689, 4149-4164 (2004). 

A novel class of metathesis catalysts derives from methyltrioxorhenium, CH3Re03 (MTO) [22]. Combined with certain solid supports such as Si02/Al203 or Nb205, highly active catalysts are generated [23, 24]. They even tolerate fimctional groups such as ketones, esters, and carboxylic acids. Based upon NMR spectroscopic evidence [25] and in accord with theoretical studies, surface-attached Re=CH2 species initiate metathesis via a novel type of tautomerism [Eq. (3)]. 

Progress in rhenium chemistry reported in 1991 is reviewed.549 There is much important material in a review of methyltrioxorhenium catalysed alkene metathesis, oxidation and aldehyde alkenation, a review of the insertion of activated alkynes into the metal-metal bond of dinuclear manganese and rhenium carbonyl complexes. i a review of the reactions of [Cp(CO)2Mn=CPh]+ towards electron rich alkynes and nitriles552 and a review of the discovery of tRe(CBu )(CHBu ) OCMe(CF3)2 2l and recent results covering the metathesis of alkenes. s... 

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