magnesium monoperoxyphthalate
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| ImageFile = Magnesium monoperoxyphthalate.svg
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| PIN = Magnesium bis(2-carbonoperoxoylbenzoate)
| OtherNames = H48; MMPP
|Section1={{Chembox Identifiers
| CASNo = 84665-66-7
| PubChem = 3081588
| EINECS = 279-013-0
| UNII = YN884S965H
| ChemSpiderID =2006682
| SMILES = [Mg++].OOC(=O)C1=CC=CC=C1C([O-])=O.OOC(=O)C1=CC=CC=C1C([O-])=O }}
|Section2={{Chembox Properties
| C=16 | H=10 | Mg=1 | O=10
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|Section3={{Chembox Hazards
| MainHazards =
| FlashPtC = 173.4
| AutoignitionPt = }}
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Magnesium monoperoxyphthalate (MMPP) is a water-soluble peroxy acid used as an oxidant in organic synthesis. Its main areas of use are the conversion of ketones to esters (Baeyer-Villiger oxidation), epoxidation of alkenes (Prilezhaev reaction), oxidation of sulfides to sulfoxides and sulfones, oxidation of amines to produce amine oxides, and in the oxidative cleavage of hydrazones.{{cite journal |doi=10.1016/j.tet.2009.01.100 |title=Highly efficient epoxidation of unsaturated steroids using magnesium bis(monoperoxyphthalate) hexahydrate |year=2009 |last1=Carvalho |first1=João F.S. |last2=Silva |first2=M. Manuel Cruz |last3=Sá e Melo |first3=M. Luisa |journal=Tetrahedron |volume=65 |issue=14 |pages=2773–81}}
Due to its insolubility in non-polar solvents MMPP has seen less use than the more widely used meta-chloroperoxybenzoic acid (mCPBA). Although work up procedures are more simply handled in polar solvents, usage of MMPP to oxidize nonpolar substrates in biphasic media combined with a phase transfer catalyst have been inefficient. Despite this MMPP has certain advantages over mCPBA including a lower cost of production and increased stability.
MMPP is also used as the active ingredient in certain surface disinfectants such as Dismozon Pur.{{cite web|title=Magnesium Monoperoxyphthalate|url=http://www.ndrugs.com/?s=Magnesium%20Monoperoxyphthalate|publisher=ndrugs|accessdate=19 December 2013}} As a surface disinfectant MMPP exhibits a broad spectrum biocidal effect including inactivation of endospores.{{cite journal |doi=10.1111/j.1365-2672.1984.tb01416.x |title=The antimicrobial properties of magnesium monoperoxyphthalate hexahydrate |year=1984 |last1=Baldry |first1=M.G.C. |journal=Journal of Applied Bacteriology |volume=57 |issue=3 |pages=499–503 |pmid=6397460|doi-access= }} Its wide surface compatibility enables its use on sensitive materials, such as plastic and rubber equipment used in hospitals. Additionally MMPP has been investigated as a potential antibacterial agent for mouthwashes and toothpaste.{{cite journal |doi=10.1034/j.1600-051X.1999.260406.x |title=The effects of mouth rinses and dentifrice-containing magnesium monoperoxyphthalate (mmpp) on oral microflora, plaque reduction, and mucosa |year=1999 |last1=Scully |first1=Crispian |last2=El-Kabir |first2=Mohamed |last3=Greenman |first3=John |last4=Porter |first4=Stephen R. |last5=Mutlu |first5=Serdar |last6=Barton |first6=Ian |last7=Adair |first7=Richard |journal=Journal of Clinical Periodontology |volume=26 |issue=4 |pages=234–8 |pmid=10223394}}