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ESR evidence for the stereospecific spin trapping of 5‐alkyl‐5‐methyl‐1‐pyrroline N ‐oxides
Author(s) -
Zhang Yongkang,
Xu Guangzhi
Publication year - 1989
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.1260270907
Subject(s) - chemistry , pyrroline , alkyl , stereospecificity , adduct , spin trapping , trapping , radical , electron paramagnetic resonance , nitrone , spectroscopy , photochemistry , medicinal chemistry , organic chemistry , nuclear magnetic resonance , catalysis , cycloaddition , quantum mechanics , biology , ecology , physics
The ability of ten cyclic nitrones, 5‐alkyl‐5‐methyl‐1‐pyrroline N ‐oxides, to trap a variety of short‐lived free radicals has been investigated using ESR spectroscopy. Stereospecific spin trapping by these nitrones has been demonstrated by comparison of the ESR spectra of their adducts with the ESR spectra of the corresponding 5‐alkyl‐5‐methyl‐1‐tetrahydropyrrolyl‐1‐oxyls. Phenyl radical trans addition to these nitrones has also been proved.