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m-CPBA

(m-Chloroperoxybenzoic Acid)


Other Names:

m-Chloroperbenzoic acid

3-Chloroperoxybenzoic acid

3-Chloroperbenzoic acid




General Information:


Structure:



CAS Number: 937-14-4

Molecular Weight: 172.57 g/mol

Appearance: White powder

Melting Point: 92-94 C

Acidity (pKa): 7.57


m-CPBA is a peroxycarboxylic acid that is commonly used as an oxidizing agent. It is usually available in <77% form because pure m-CPBA is shock sensitive (potentially explosive). It usually consists of ~10% m-chlorobenzoic acid and the remainder is H2O.




Common Uses:


Reagent for the oxidation of sulfides to sulfoxides





Reagent for the oxidation of sulfides to sulfones





Reagent for the oxidation of alkenes to epoxides





Reagent for Baeyer-Villiger oxidation





Reagent for the oxidation of nitrogen-containing compounds





Safety:


Pure m-CPBA can be detonated by shock or sparks.




References:


1) WO2016001341, page 101

2) WO2007084786, page 113

3) UK Pat App GB2463151A, page 179

4) Wikipedia: meta-Chloroperoxybenzoic acid (link)

5) www.sigmaaldrich.com: 3-Chloroperbenzoic acid (link)

6) Burke, S. D.; Danheiser, R. L.; Handbook of Reagents for Organic Synthesis, Oxidizing and Reducing Agents