Radical ions in photochemistry. Part 24. Carbon-carbon bond cleavage of radical cations in solution: theory and application
作者:Roman Popielarz、Donald R. Arnold
DOI:10.1021/ja00164a030
日期:1990.4
The cleavage of radical cations of two series of alkanes, 1,1,2-triaryl- and 1,1,2,2-tetraarylalkanes, generated by photoinduced single electron transfer in acetonitrile-methanol, occurs with formation of radical and carbocation fragments. The radical cations of some unsymmetrically substituted alkanes cleave to give all four of the possible products, two hydrocarbons emanating from the radicals and
乙腈-甲醇中光诱导单电子转移产生的两个系列烷烃 1,1,2-三芳基烷烃和 1,1,2,2-四芳基烷烃的自由基阳离子的裂解伴随着自由基和碳正离子碎片的形成而发生。一些不对称取代的烷烃的自由基阳离子裂解得到所有四种可能的产物,两种来自自由基的烃和两种来自碳阳离子的甲醚,与两种可能的自由基片段的氧化电位成比例。观察到的产物比率的对数与根据报告的电化学确定的氧化电位计算的对数之间存在极好的线性相关性(r = 0.998,5 分)。比例常数 (1。