53545-01-0Relevant articles and documents
Mass spectrometry and electron paramagnetic resonance study of free radicals spontaneously formed in nitrone-peracid reactions
Sang, Hong,Janzen, Edward G.,Lewis, Brian H.
, p. 2358 - 2363 (2007/10/03)
Reactions of spin traps (C-phenyl N-tert-butyl nitrone (PBN) and 5,5-dimethyl-2-phenyl-1-pyrroline N-oxide (2-Ph-DMPO)) with peracids have been investigated by both mass spectrometry (MS) and electron paramagnetic resonance (EPR). The peracids m-chloroperbenzoic acid, perbenzoic acid, and perpropionic acid, which can be considered models of biological peracids produced during lipid peroxidation, were found to react with spin traps to spontaneously produce significant amount of aminoxyl radicals. The radical products, as well as the nonradical products were detected and their structures identified by EPR and/or MS. Mechanisms for the formation of these products are proposed.
Acyl Nitroxides. Part 4. Estimation of OH Bond Dissociation Energies for N-t-Butylhydroxamic Acids
Jenkins, Terence C.,Perkins, M. John
, p. 717 - 720 (2007/10/02)
E.s.r. spectroscopy has been used to determine the equilibrium constants for the hydrogen exchange reactions between N-t-butylhydroxamic acids and the stable piperidine N-oxyl (1); since the O-H bond strength in (1)-H is known, this gives an estimate of the O-H bond strengths in the hydroxamic acids.These are found to be stronger than those in dialkyl nitroxides and increase with increasing electron demand in the acyl group.