Methyltrioxorhenium(VII)

Gefahreninformationscode (GHS)

• Bildanzeige (GHS)

  

• Alarmwort

  Warnung

• Gefahrenhinweise

  H272：Kann Brand verstärken; Oxidationsmittel.

• Sicherheit

  P220：Von Kleidung und anderen brennbaren Materialien fernhalten.

  P221：Mischen mit brennbaren Stoffen unbedingt verhindern.

Methyltrioxorhenium(VII) Chemische Eigenschaften,Einsatz,Produktion Methoden

• R-Sätze Betriebsanweisung:

  R41:Gefahr ernster Augenschäden.

• S-Sätze Betriebsanweisung:

  S22:Staub nicht einatmen.
  S24/25:Berührung mit den Augen und der Haut vermeiden.

• Chemische Eigenschaften

  white to blue-grey crystals

• Verwenden

  Potent catalytic oxidant for converting alkenes to epoxides in a variety of solvents and 2-methylnaphthalene to 2-methyl-1,4-naphthoquinone (Vitamin K₃).
  Catalytic oxidant used with urea hydrogen peroxide in an efficient conversion of imines to nitrones.
  An effective antioxidant under various conditions.

• Verwenden

  Methyltrioxorhenium(VII) is used as a catalyst for various transformations such as olefin metathesis. It is associated with hydrogen peroxide and used as an oxidizing agent. It is used to prepare acid or ester from the corresponding terminalalkynes. It is a catalytic oxidant used with urea hydrogen peroxide to prepare nitrones. It reacts with 2-methylnaphthalene to get 2-methyl-1,4-naphthoquinone (Vitamin K3). Further, it catalyzes the reaction with aldehydes and diazoketones to get an alkene. In addition to this, it is used as an effective antioxidant under various conditions.

• reaction suitability

  core: rhenium
  reagent type: catalyst

• Synthese

  Turn to light yellow to stop the reaction, lower the temperature, the reaction will be pumped filter, slag with a small amount of acetonitrile rinse, the filtrate was moved to the distillation sublimator filled with Ar gas, connected to the vacuum pump and low-temperature cooling circulating pump, distillation of acetonitrile at 30mm-Hg at 40 -35 condensation recovery of acetonitrile, when the distillation is carried out to the solid of oily liquid on the sublimator appeared to stop the distillation, the installation of sublimation of the inner tube in the 0.1mm -Hg70 for sublimation processing, the resulting product methyl rhenium trioxide by re-sublimation to obtain refined methyl rhenium trioxide 1.86 g. The resulting refined methyl rhenium trioxide by melting point determination, the melting range is 105 ~ 106 .

Methyltrioxorhenium(VII) Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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