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'''Methylrhenium trioxide''', also known as '''methyltrioxorhenium''', is an ] with the formula CH<sub>3</sub>ReO<sub>3</sub>. It is a volatile, colourless solid has been used as a catalyst in some laboratory experiments. In this compound, Re has a tetrahedral coordination environment with one methyl and three oxo ligands. The oxidation state of rhenium is +7. |
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'''Methylrhenium trioxide''', also known as '''methyltrioxorhenium''', is an ] with the formula CH<sub>3</sub>ReO<sub>3</sub>. It is a volatile, colourless solid has been used as a ] in some laboratory experiments. In this compound, Re has a tetrahedral coordination environment with one methyl and three oxo ]. The ] of ] is +7. |
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==Synthesis== |
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==Synthesis== |
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Methylrhenium trioxide serves as a heterogeneous catalyst for a variety of transformations. Supported on Al<sub>2</sub>O<sub>3</sub>/SiO<sub>2</sub>, it catalyzes ] at 25 °C. |
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Methylrhenium trioxide serves as a heterogeneous catalyst for a variety of transformations. Supported on Al<sub>2</sub>O<sub>3</sub>/SiO<sub>2</sub>, it catalyzes ] at 25 °C. |
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In solution, MTO catalyses for the oxidations with ]. Terminal alkynes yield the corresponding acid or ester, internal alkynes yield diketones, and ]s give epoxides. MTO also catalyses the conversion of ]s and ]s into an alkene.<ref> Hudson, A. “Methyltrioxorhenium” Encyclopedia of Reagents for Organic Synthesis. John Wiley & Sons: New York, 2002.</ref> |
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In solution, MTO catalyses for the oxidations with ]. Terminal ]s yield the corresponding acid or ester, internal alkynes yield diketones, and ]s give epoxides. MTO also catalyses the conversion of ]s and ]s into an alkene.<ref> Hudson, A. “Methyltrioxorhenium” Encyclopedia of Reagents for Organic Synthesis. John Wiley & Sons: New York, 2002.</ref> |
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==References== |
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==References== |
Methylrhenium trioxide is commercially available. It can be prepared by many routes, a typical method is the reaction of Re2O7 and tetramethyltin:
Methylrhenium trioxide serves as a heterogeneous catalyst for a variety of transformations. Supported on Al2O3/SiO2, it catalyzes olefin metathesis at 25 °C.
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Infobox references