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NO spin trapping and EPR studies on the photochemistry of aliphatic aldehydes
Author(s) -
Wang Fan,
Lei Liandi,
Wu Longmin
Publication year - 2005
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1513
Subject(s) - chemistry , radical , propionaldehyde , photochemistry , electron paramagnetic resonance , acetaldehyde , hydrogen atom abstraction , spin trapping , ketyl , isobutyraldehyde , aldehyde , hydrogen atom , alkyl , organic chemistry , catalysis , physics , nuclear magnetic resonance , ethanol
Abstract Radicals, such as acyl, hydrated acyl, alkyl and ketyl radicals, from aliphatic aldehyde photochemistry were detected by NO spin trapping and EPR techniques. Deuterium effects on EPR spectra and the generation of radicals by 2‐amido‐2‐propyl radical attack on substrate molecules in aqueous solution via hydrogen‐atom abstraction were applied to identify radicals produced photochemically from aldehydes. Aliphatic aldehydes used in the present investigation were formaldehyde, acetaldehyde, acetaldehyde‐ d 4 , propionaldehyde, isobutyraldehyde, isopentanal and tert ‐pentanal. Possible reaction mechanisms are suggested. Copyright © 2004 John Wiley & Sons, Ltd.