89900-84-5Relevant academic research and scientific papers
Substituent Effects on ESR Parameters of α-Phenyl-N-tert-butylnitrone Spin Adducts. Resolution Enhancement and Mass Spectrometry
Pan, Kai,Lin, Chiou-Rong,Ho, Tong-Ing
, p. 632 - 638 (2007/10/02)
The combination of high-performance liquid chromatography (HPLC) and ESR spectrometry was used to isolate the free radicals produced by the reaction of a Grignard reagent with 15 substituted α-phenyl-N-tert-butylnitrones.Long-range hyperfine splitting con
Spontaneous Free-Radical Formation in Reactions of m-Chloroperbenzoic Acid with C-Phenyl-N-tert-butylnitrone (PBN) and 3- or 4-Substituted PBN's
Janzen, Edward G.,Lin, Chiou-Rong,Hinton, Randall D.
, p. 1633 - 1635 (2007/10/02)
A molecular reaction between m-chloroperbenzoic acid and C-phenyl-N-tert-butylnitrone (PBN) produces significant amounts of aminoxyl radicals assigned to the m-chlorobenzoyloxyl adduct of PBN and benzoyl-tert-butylaminoxyl.
Substituent Effect on the Spin-trapping Reactions of Substituted N-Benzylidene-t-butylamine N-oxides
Murofushi, Katsumi,Abe, Kazuhisa,Hirota, Minoru
, p. 1829 - 1834 (2007/10/02)
Relative rates of the reactions of substituted N-benzylidene-t-butylamine N-oxides with substituted phenyl free radicals have been determined by e.s.r. spectroscopic analyses of the products from competitive addition reactions.The substituent effect was interpreted in terms of a reaction mechanism involving an electron-transfer interaction between the reactants.The results are in accord with semiempirical MO calculations.
Mass Spectrometric Determination of Spin Adducts of Hydroxyl and Aryl Free Radicals
Abe, Kazuhisa,Suezawa, Hironori,Hirota, Minoru,Ishii, Tetsuo
, p. 29 - 34 (2007/10/02)
G.l.c.-mass spectrometry has been applied in conjunction with the e.s.r. to the identification of spin adducts produced by reactions between short-lived free radicals and nitrone spin traps.Thermally unstable spin adducts were converted into thermally stable and volatile trimethylsilyl derivatives suitable for g.l.c.-mass spectrometry.The structures of the trimethylsilylated spin adducts could be determined by observing molecular and fragment ion peaks as well as isotope peaks.Hydroxyl and aryl free radicals are identfiable by this method.Even if there were more than two different kinds of spin adduct, they could be easily separated by g.l.c. and identified by their mass spectra.
