452972-03-1

Basic information

• Product Name: phenylacetylperoxyl radical
• Synonyms: phenylacetylperoxyl radical
• CAS NO: 452972-03-1
• Molecular Weight: 151.142
• Mol File: 452972-03-1.mol

Chemical Properties

• CAS DataBase Reference: phenylacetylperoxyl radical(CAS DataBase Reference)
• NIST Chemistry Reference: phenylacetylperoxyl radical(452972-03-1)
• EPA Substance Registry System: phenylacetylperoxyl radical(452972-03-1)

Safety Data

• Hazardous Substances Data: 452972-03-1(Hazardous Substances Data)

Upstream product

• 102-04-5 1,3-Diphenylpropanone 
• 22673-58-1 phenylacetyl radical 

Downstream Products

• 19910-09-9 peroxyphenylacetic acid 
• 14546-48-6 manganese(III) ion 
• 790674-36-1 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonate) cation radical 

Relevant articles and documents

Reactions of Mn(II) and Mn(III) with alkyl, peroxyalkyl, and peroxyacyl radicals in water and acetic acid

The kinetics of oxidation of Mn(II) with acylperoxyl and alkylperoxyl radicals were determined by laser flash photolysis utilizing a macrocyclic nickel complex as a kinetic probe. Radicals were generated photochemically from the appropriate ketones in the presence of molecular oxygen. In both acidic aqueous solutions and in 95% acetic acid, Mn(II) reacts with acylperoxyl radicals with k = (0.5-1.6) × 106 M-1 s-1 and somewhat more slowly with alkylperoxyl radicals, k = (0.5-5) x 10 5 M-1 s-1. Mn(III) rapidly oxidizes benzyl radicals, k = 2.3 × 108 M-1 s-1 (glacial acetic acid) and 3.7 × 108 M-1 s-1 (95% acetic acid). The value in 3.0 M aqueous perchloric acid is much smaller, 1× 107 M-1 s-1. The decarbonylation of benzoyl radicals in H2O has k = 1.2 × 106 s -1.

Acyl/aroylperoxyl radicals: A comparative study of the reactivity of peroxyl radicals resulting from the α-cleavage of ketones

Employing 2,2′-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS2-) as a selective radical probe, nanosecond laser flash photolysis (LFP) and competitive kinetic methods have been used to investigate the reactions of acyl/aroylperoxyl radicals derived from the addition of oxygen to the α-cleavage products of various ketones in methanol. The selectivity of ABTS2- for acyl/aroylperoxyl radicals (as opposed to alkylperoxyl radicals), under the experimental conditions used, is supported by the oxygen concentration dependence of the ABTS·- radical ion absorption amplitudes for acyl radicals that undergo decarbonylation on sub-microsecond timescales. The oxygen concentration dependence of the ABTS·- transient absorption reflects the competition between decarbonylation and oxygen addition and therefore this data also provides information on decarbonylation and oxygen addition rates. Further evidence in support of the selectivity of ABTS2- for acyl/aroylperoxyl radicals is the agreement between results obtained from using different ketone precursors for specific acyl/aroylperoxyl radicals. The order of reactivity of the peroxyl radicals towards ABTS2- is found to be aroylperoxyl > acylperoxyl ? alkylperoxyl. The use of ABTS2- as a monitor for acyl/aroylperoxyl radicals has been exploited by using competitive kinetics to obtain rate constants for the reactions of various acyl/aroylperoxyl radicals with vitamin E and trolox.