respectively. The reaction products were studied as spin traps for the short-lived radicals HO·, Ph·, PhCO2·, NC(Me2)C·, and NC(Me2)CO·. The nitroxides generated in the reactions of the above-mentioned short-lived radicals with nitrones 1 and 2a,b were characterized by ESR spectroscopy. Of these nitrones, oxime 2a is the most effective radical trap.
5,5-二甲基-3-氧代-1-
吡咯啉1-氧化物(3-氧代-
DMPO,1)与NH2OH和N2H4的反应分别得到
肟(2a)和腙(2b)。研究了反应产物作为短寿命自由基 HO·、Ph·、PhCO2·、NC(Me2)C·和 NC(Me2)CO·的自旋陷阱。在上述短寿命自由基与硝酮 1 和 2a、b 的反应中产生的硝基氧化物通过 ESR 光谱进行表征。在这些硝酮中,
肟 2a 是最有效的自由基捕集器。