Generation of 15N labelled bis(polyfluoroalkyl) nitroxides and their hydrogen-abstraction reactions with alkanes, alkylbenzenes and aldehydes
作者:Cheng-Xue Zhao、Guo-Fei Chen、Xi-Kui Jiang
DOI:10.1016/s0022-1139(00)81074-x
日期:1988.3
Blue solutions containing 15 labelled bis(polyfluoralkyl) nitroxides and spin traps, polyfluoronitrosoalkanes, were conveniently made from the reactions of Na15NO2 with polyfluoro-compounds, (RFCO2) and RFSO2Br in F113. It has been found that the nitroxides effected fast H-abstraction from alkanes, alkylbenzenes, aldehydes and the radicals derived from the substrates were in turn effectively trapped
由Na 15 NO 2与多氟化合物(R F CO 2)和R F SO 2 Br在F113中的反应可方便地制备包含15个标记的双(聚氟烷基)氮氧化物和自旋阱,多氟亚硝基链烷的蓝色溶液。已经发现,氮氧化物有效地从烷烃,烷基苯,醛中快速吸氢,而衍生自底物的自由基又被R F 15 NO有效地捕获,得到15 N标记的可通过ESR检测的自旋加合物。N越大(15 N)值以及氮氧化物和自旋加合物的简单拆分,使得对H原子吸收和其他自由基反应的动力学研究变得十分可行。