carbanide
Methyltrioxorhenium (VII)
CAS: 70197-13-6
Molecular Formula: CH3O3Re
carbanide - Names and Identifiers
| Name | Methyltrioxorhenium (VII) |
| Synonyms | MTO carbanide trioxorhenium Methyltrioxorhenium METHYLRHENIUM TRIOXIDE Methylrhenium trioxide Methyltrioxorhenium(VII) METHYLTRIOXORHENIUM(VII) Methyltrioxorhenium (VII) METHYLRHENIUM TRIOXIDE(VII) Methylrhenium(VII) trioxide Methyltrioxorhenium(VII) Powder Rhenium, methyltrioxo-,(T-4)- (9CI) |
| CAS | 70197-13-6 |
| EINECS | 677-701-9 |
| InChI | InChI=1/CH3.3O.Re/h1H3;;;;/rCH3O3Re/c1-5(2,3)4/h1H3 |
carbanide - Physico-chemical Properties
| Molecular Formula | CH3O3Re |
| Molar Mass | 249.24 |
| Density | d23 4.21 |
| Melting Point | 111°C(lit.) |
| Boling Point | 65°C 0mm |
| Water Solubility | Soluble in water. |
| Appearance | crystal |
| Color | colorless to pale-gray |
| Merck | 14,6130 |
| BRN | 3927932 |
| Storage Condition | Room Temprature |
| Sensitive | Moisture & Light Sensitive |
| MDL | MFCD00192332 |
carbanide - Risk and Safety
| Risk Codes | 41 - Risk of serious damage to eyes |
| Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. |
| UN IDs | UN1479 |
| WGK Germany | 3 |
| FLUKA BRAND F CODES | 8-10-21 |
| TSCA | No |
| HS Code | 29319090 |
| Hazard Class | 5.1 |
| Packing Group | II |
carbanide - Introduction
Extremely soluble in water.
Last Update：2022-10-16 17:28:04
carbanide - Reference Information
| Introduction | methyl rhenium trioxide (CH3ReO3) abbreviated as MTO, and gradually recognized by people of the transition metal organic catalyst, it has high efficiency, high selectivity to catalyze such as the oxidation of unsaturated hydrocarbons, for organic synthesis reactions such as the oxidation of aromatic compounds and the oxidation of heteroatom-containing organic compounds, the study of methyl rhenium trioxide was initiated in 1979. R. Beatie, P.J.Jones,,lnorg,chem.1979.18.2318. It has been reported that the synthesis method of Re2O7 and Sn(CH3)4 was not provided until 1988with practical synthetic significance, and Herrmann W.A.Kuhn reported the preparation of methyl rhenium trioxide from Re2O7, (CH3)3SiCl and Sn(CH3)4. |
| preparation | in the reactor, under the protection of nitrogen, add 3.6g(10mmol) of silver perrhenate at room temperature, 35mL of acetonitrile, stirred for 4-5 minutes, add 3.13mL(25mmol) of trimethylchlorosilane weighed first, then add 1.7mL(25mmol) of tetramethyltin, and then raise the temperature to maintain the reaction temperature at 52 ℃, observe the color change of the reaction solution, and when the reaction solution changes from orange to light yellow, stop the reaction, cool the temperature, filter the reaction mixture, rinse the filter residue with a small amount of acetonitrile, and move the filtrate to the distillation sublimator filled with Ar gas, connect the vacuum pump and the low-temperature cooling circulation pump, at 30mm-Hg at 40 ° C distillation acetonitrile -35 ° C condensation recovery acetonitrile, when the distillation is carried out to the sublimator with the appearance of solid oily liquid, the distillation was stopped, and the inner tube of the sublimator was installed and subjected to sublimation treatment at 0.1 mm-Hg70 ° C., and the obtained product methyl rhenium trioxide was Resublimated to obtain 1.86g of a refined product methyl rhenium trioxide. The melting point of the obtained refined methyl rhenium trioxide was measured, and the melting range was 105-106 °c. |
| Use | powerful catalytic oxidants 1,2 for the conversion of olefins in various solvents to epoxides 3, the 2-methylnaphthalene is converted to 2-methyl -1, 4-naphthoquinone (vitamin K3). 4,5 catalytic oxidants, together with urea hydrogen peroxide, are used to efficiently convert imines to nitrones. 6 effective antioxidants under various conditions. 7,8,9 |
Last Update：2024-04-09 02:00:10
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