ChemicalBook--->CAS DataBase List--->943-39-5

943-39-5

943-39-5 Structure

943-39-5 Structure
IdentificationBack Directory
[Name]

4-nitroperoxybenzoic acid
[CAS]

943-39-5
[Synonyms]

p-Nitroperbenzoic acid
4-nitroperbenzoic acid
4-nitroperoxybenzoic acid
Benzenecarboperoxoic acid, 4-nitro-
[EINECS(EC#)]

213-401-2
[Molecular Formula]

C7H5NO5
[MDL Number]

MFCD00014716
[MOL File]

943-39-5.mol
[Molecular Weight]

183.12
Chemical PropertiesBack Directory
[Melting point ]

138°C
[Boiling point ]

316.77°C (rough estimate)
[density ]

1.6074 (rough estimate)
[refractive index ]

1.6280 (estimate)
[solubility ]

sol THF, ether, CHCl3, benzene.
[pka]

6.71±0.40(Predicted)
[EPA Substance Registry System]

4-Nitroperoxybenzoic acid (943-39-5)
Hazard InformationBack Directory
[Uses]

4-Nitroperoxybenzoic acid is an electrophile that transfers oxygen to alkenes.
[Preparation]

The reaction between Na2O2 and p-Nitrobenzoyl Chloride in THF in the  presence of small quantities of water below -5 °C furnishes the sodium salt of PNPBA. p,p′- Dinitrobenzoyl peroxide and p-nitrobenzoic acid are removed from the reaction mixture during  workup. PNPBA (purity 94-96%) is obtained in 85% yield (0.1 mol scale).
[Production Methods]

This peroxide can be prepared from p-nitrobenzoic acid and 90% hydrogen peroxide in methanesulfonic acid medium.
[Synthesis Reference(s)]

The Journal of Organic Chemistry, 27, p. 1336, 1962 DOI: 10.1021/jo01051a050
Synthetic Communications, 18, p. 2123, 1988 DOI: 10.1080/00397918808068282
[storage]

At room temperature, PNPBA is stable for long periods.
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