METHYLTRIOXORHENIUM(VII) Property

Melting point:

111 °C(lit.)

Boiling point:

65°C 0mm

Density 

d23 4.21

form 

crystal

color 

colorless to pale-gray

Water Solubility 

Soluble in water.

Sensitive 

Moisture & Light Sensitive

Merck 

14,6130

BRN 

3927932

Safety

Risk Statements 

41

Safety Statements 

22-24/25

RIDADR 

UN1479

WGK Germany 

3

F 

8-10-21

TSCA 

No

HazardClass 

5.1

PackingGroup 

II

HS Code 

29319090

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H272May intensify fire; oxidizer

Precautionary statements

P220Keep/Store away from clothing/…/combustible materials.

P221Take any precaution to avoid mixing with combustibles/…

METHYLTRIOXORHENIUM(VII) Chemical Properties,Usage,Production

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

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.

Uses

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.