Synthesis of the cis diastereoisomer of 5-diethoxyphosphoryl-5-methyl-3-phenyl-1-pyrroline N-oxide (DEPMPPOc) and ESR study of its superoxide spin adduct
作者:Céline Nsanzumuhire、Jean-Louis Clément、Olivier Ouari、Hakim Karoui、Jean-Pierre Finet、Paul Tordo
DOI:10.1016/j.tetlet.2004.07.016
日期:2004.8
prepared in three steps from phenylacetaldehyde and used in ESR-spin trapping of various carbon-, oxygen- and sulfur-centred radicals. In the case of the cis-isomer, the presence of the phenyl group cancels the alternating line width phenomenon observed for the DEPMPO–OOR (R = H, But) spin adducts. The ESR spectra of the DEPMPPOc–OOR spin adducts exhibit more straightforward patterns and are more easily
由苯乙醛分三步制备5-二乙氧基磷酰基-5-甲基-3-苯基-1-吡咯啉N-氧化物(DEPMPPO)的顺式和反式非对映异构体,并将其用于ESR -自旋捕获各种以碳,氧和硫为中心的自由基。在顺式异构体的情况下,苯基的存在消除了DEPMPO-OOR(R = H,Bu t)自旋加合物的交替线宽现象。DEPMPPO c -OOR自旋加合物的ESR谱图显示出更简单的图案,并且更易于分配。