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209104

Sigma-Aldrich

Potassium osmate(VI) dihydrate

Synonym(s):

Dipotassium tetrahydroxodioxoosmate, Potassium dioxidodioxoosmium dihydrate, Potassium osmium oxide

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About This Item

Linear Formula:
K2OsO4·2H2O
CAS Number:
10022-66-9
Molecular Weight:
368.45
EC Number:
243-247-1
MDL number:
MFCD00149919
UNSPSC Code:
12352302
PubChem Substance ID:
24852235
NACRES:
NA.23

form

powder

Quality Level

200

reaction suitability

reagent type: oxidant

SMILES string

O.O.[K+].[K+].[O-][Os]([O-])(=O)=O

InChI

1S/2K.2H2O.4O.Os/h;;2*1H2;;;;;/q2*+1;;;;;2*-1;

InChI key

DGODWNOPHMXOTR-UHFFFAOYSA-N

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General description

Potassium osmate(VI) dihydrate is a hydroscopic transition metal compound soluble in water and methanol, widely used as a reagent/catalyst to synthesize Os compounds.

Application

Potassium osmate(VI) dihydrate can be used:
  • As a reagent for the stereoselective synthesis of 2,3,4-unprotected β-N-Glycopyranosides via palladium-catalyzed Tsuji-Trost amination.
  • As a catalyst for asymmetric synthesis of carboranylated diols bearing two adjacent stereocenters.
  • To prepare Osmium complexes for voltammetric analysis of polysaccharides.

Pictograms

Skull and crossbones
GHS06

Signal Word

Danger

Hazard Statements

H301 + H311 + H331

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral

Storage Class Code

6.1B - Non-combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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Tetrahedron Letters, 47, 3797-3797 (2006)
Timothy J Donohoe et al.
Journal of the American Chemical Society, 128(8), 2514-2515 (2006-02-24)
The use of N-sulfonyloxy carbamates as reoxidants for the tethered aminohydroxylation (TA) reaction is reported. These new conditions obviate the requirement for lithium hydroxide and tBuOCl in the oxidation mixture. In addition to providing aminohydroxylation products in good yields, the

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