Reactions
Catalyst used with H2O2 for oxidation of a variety of substrates.
(a) Alkenes
(b) Secondary amines
(c) Arenes
(d) Silyl enol ethers/Silyl ketene acetals
(e) Sulfides
(f) Bayer-Villager-Type oxidation
(g) Amine oxidation
(h) Phenol oxidation
Chemical Properties
white to blue-grey crystals
Uses
Potent catalytic oxidant for converting alkenes to epoxides in a variety of solvents and 2-methylnaphthalene to 2-methyl-1,4-naphthoquinone (Vitamin K
3).
Catalytic oxidant used with urea hydrogen peroxide in an efficient conversion of imines to nitrones.
An effective antioxidant under various conditions.
Uses
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
Synthesis
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 .
