✦ LIBER ✦

ESR and Mass Spectrometry Studies on the Radical Products of Photochemically Generated o–Quinodimethane with α-Phenyl-N-tert-butylnitrones

✍ Scribed by Kai Pan; Tong-Ing Ho

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 432 KB
Volume: 34
Category: Article
ISSN: 0749-1581
DOI: 10.1002/(sici)1097-458x(199612)34:12<1007::aid-omr9>3.0.co;2-z

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✦ Synopsis

The combination of high-performance liquid chromatography (HPLC) and ESR spectrometry was used to isolate the radical products obtained by photolysis of o-methylbenzaldehyde (l), o-methylacetophenone (2) and omethylbenzophenone (3) in the presence of a-phenyl-N-tert-butylnitrone and its derivatives (4-19). Linear correlations between the hyperfine splitting constants and the Hammett parameters are observed. The mass spectra of the HPLC-ESR isolated radical products and their fragmentation patterns are reported.