Electron spin resonance of spin-trapped radicals of amines and polyamines. Hydroxyl radical reactions in aqueous solutions and γ-radiolysis in the solid state
作者:Magdi M. Mossoba、Ionel Rosenthal、Peter Riesz
DOI:10.1139/v82-216
日期:1982.6.15
free radicals produced by γ-radiolysis of these solids at room temperature in the absence of air were identified by dissolution in aqueous solutions of MNP. The predominant reaction of with amines and polyamines below pH 7 was the abstraction of hydrogen atoms from a carbon that is not adjacent to the protonated amino group. For agmatine and arcaine which contain guanidinium groups abstraction occurred
羟基自由基与甲胺、二甲胺、三甲胺、二乙胺、仲丁胺、乙二胺、1,3-二氨基丙烷、腐胺、尸胺、1,7-二氨基庚烷、鸟氨酸、亚精胺、精胺、胍丁胺和阿卡因在水溶液中的反应有通过自旋捕获和 esr 进行了研究。羟基自由基是由 H2O2 的紫外光解产生的,2-甲基-2-亚硝基丙烷 (MNP) 用作自旋阱。还研究了电离辐射对多晶状态的相同多胺的影响。通过溶解在 MNP 的水溶液中来确定这些固体在室温下在没有空气的情况下的 γ-辐射分解所产生的自由基。与低于 pH 7 的胺和多胺的主要反应是从与质子化氨基不相邻的碳中夺取氢原子。对于含有胍基团的胍丁胺和阿卡因从 α-CH 中提取。二甲胺被氧化成二甲...