作者:Micaël Hardy、Florence Chalier、Jean-Pierre Finet、Antal Rockenbauer、Paul Tordo
DOI:10.1021/jo0479516
日期:2005.3.1
5-(diethoxyphosphoryl)-5-methyl-4-phenylpyrroline N-oxide (4-PhDEPMPOt8 and 4-PhDEPMPOc9) were prepared stereoselectively and used as spin traps for hydroxyl and superoxide radicals. The spin adduct formed by reaction of the cis stereoisomer 9 with superoxide radical anion exhibited an 8-line ESR spectrum, showing only a reduced alternating line width phenomenon. This spectrum is simpler than the 12-line spectrum
立体选择性地制备了5-(二乙氧基磷酰基)-5-甲基-4-苯基吡咯啉N-氧化物(4-PhDEPMPO t 8和4-PhDEPMPO c 9)的顺式和反式非对映异构体,并将其用作羟基和超氧化物自由基的自旋阱。由顺式立体异构体9与超氧化物自由基阴离子反应形成的自旋加合物显示8线ESR谱,仅显示减少的交替线宽现象。该光谱比DEPMPO-OOH的12线光谱更简单,DEPMPO-OOH的12线光谱表现出很强的交替线宽现象。4-PhDEPMPO c -OOH和DEPMPO-OOH加合物的半衰期相同:分别为14.5分钟和15.5分钟。