Abstract
The transient radical species generated in the photolysis of 2-(4-nitrophenyl)-1H-indoly-3-methyl (NPIM) derivatives were investigated by 5,5-dimethyl-1-pyrroline-N-oxide (DMPO) spin trapping studies. The structures of the DMPO spin adducts were determined by electron paramagnetic resonance spectroscopy, mass spectrometry, and quantum chemical calculations. These results revealed that the homolytic bond cleavage occurs in the photolysis of NPIM derivatives.
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