- Manganese(III) acetate
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Manganese Triacetate Manganese TriacetateOther namesManganese Triacetate Trihydrate; Manganese(III) acetate trihydrateIdentifiers CAS number 19513-05-4 PubChem 160554 ChemSpider 141084 Jmol-3D images Image 1 - [Mn+3].O=C([O-])C.[O-]C(=O)C.[O-]C(=O)C
Properties Molecular formula C6H9MnO6.3(H2O) Molar mass 286.10 g/mol (trihydrate) Appearance Brown powder Density 1.049 g cm−3, liquid; 1.266 g cm−3, solid Hazards R-phrases R36/37/38, R62, R63 S-phrases S26, S37/39 (verify) (what is:
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Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)Infobox references Manganese(III) acetate is an inorganic compound that is used as a reagent in organic synthesis. Like the related chromium and iron compounds, it is an oxo-centred coordination complex.[1] It is usually prepared from potassium permanganate and manganeous acetate in acetic acid.
Mangese triacetate has been used as a single electron oxidant. It used to oxidise of enones to give α'-acetoxy enones. It is most widely used to add H-CH2CO2H across double bonds and is useful in lactonization reactions. The reactions proceed via the formation and homolysis of a Mn(III)-CH2CO2H bond.[2]
References
- ^ Hessel, L. W., and Romers, C., Recl. Trav. Chim. Pays-Bas, 1969, 88, 545 – 552
- ^ Barry B. Snider, "Manganese(III) Acetate" Encyclopedia of Reagents for Organic Synthesis" 2001. John Wiley.doi:10.1002/047084289X.rm018
Additional references
G. J. Williams and N. R. Hunter, Can. J. Chem. 1976, 54, 3830. Norma K. Dunlap, Mark R. Sabol, and David S. Watt, Terrahedron Letters 1984, 25, 5839-5842. Snider, B. B., Patricia, J. J., Kates, S. A. J. Org. Chem. 1988, 53, 2137-2141.
Categories:- Acetates
- Manganese compounds
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