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Methylrhenium trioxide serves as a ] for a variety of transformations. Supported on ]/], it ] ] at 25 °C.
Methylrhenium trioxide serves as a ] for a variety of transformations. Supported on ]/], it ] ] at 25 °C.
In solution, methylrhenium trioxide catalyses for the oxidations with ]. Terminal ]s yield the corresponding ] or ], internal alkynes yield ], and ]s give ]. Methylrhenium trioxide also catalyses the conversion of ]s and ]s into an alkene,<ref>Hudson,A.“Methyltrioxorhenium” Encyclopedia of Reagents for Organic Synthesis. John Wiley & Sons: NewYork,2002.</ref> and the oxidation of ] to ] with ].<ref>{{cite journal|title = Rhenium-Catalyzed Highly Efficient Oxidations of Tertiary Nitrogen Compounds to ''N''-Oxides Using Sodium Percarbonate as Oxygen Source|first1 = Suman L.|last1 = Jain|first2 = Jomy K.|last2 = Joseph|first3 = Bir|last3 = Sain|journal = ]|year = 2006|pages = 2661-2663|doi = 10.1055/s-2006-951487}}</ref>
In solution, methylrhenium trioxide catalyses for the oxidations with ]. Terminal ]s yield the corresponding ] or ], internal alkynes yield ], and ]s give ]. Methylrhenium trioxide also catalyses the conversion of ]s and ]s into an alkene,<ref>{{Cite encyclopedia |title=Methyltrioxorhenium |encyclopedia=Encyclopedia of Reagents for Organic Synthesis |publisher=John Wiley & Sons, Ltd |url=https://onlinelibrary.wiley.com/doi/10.1002/047084289X.rn00017.pub3 |last=Hudson |first=Andrew |date=2013-09-16 |language=en |doi=10.1002/047084289x.rn00017.pub3 |isbn=978-0-471-93623-7 |last2=Betz |first2=Daniel |last3=Kühn |first3=Fritz E. |last4=Jiménez-Alemán |first4=Guillermo H. |last5=Boland |first5=Wilhelm}}</ref> and the oxidation of ] to ] with ].<ref>{{cite journal|title = Rhenium-Catalyzed Highly Efficient Oxidations of Tertiary Nitrogen Compounds to ''N''-Oxides Using Sodium Percarbonate as Oxygen Source|first1 = Suman L.|last1 = Jain|first2 = Jomy K.|last2 = Joseph|first3 = Bir|last3 = Sain|journal = ]|year = 2006|pages = 2661-2663|doi = 10.1055/s-2006-951487}}</ref>
Methylrhenium trioxide is commercially available. It can be prepared by many routes, a typical method is the reaction of rhenium heptoxide and tetramethyltin:
Re2O7 + (CH3)4Sn → CH3ReO3 + (CH3)3Sn−O−ReO3
Analogous alkyl and aryl derivatives are known. Compounds of the type R−ReO3 are Lewis acids, forming both 1:1 and 1:2 adducts with halides and amines.
Herrmann, W. A.; Kratzer R. M.; Fischer R. W. (1997). "Alkylrhenium Oxides from Perrhenates: A New, Economical Access to Organometallic Oxide Catalysts". Angew. Chem. Int. Ed. Engl.36 (23): 2652–2654. doi:10.1002/anie.199726521.
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