The time-dependent isomerizations and thiol additions of several Z- and E-monounsaturated fatty acid methyl esters catalyzed by alkanethiyl radicals during gamma-radiolysis of tert-butyl alcohol solutions are analyzed on the basis of the radiation chemical yield of radicals and established rate data. This provides room-temperature rate constants for the reversible thiyl addition. Within experimental
基于自由基的辐射
化学产率和已建立的速率数据,分析了在
叔丁醇溶液的 γ-辐射过程中由
烷烃基自由基催化的几种 Z-和 E-单不饱和
脂肪酸甲酯的时间依赖性异构化和
硫醇加成. 这为可逆的
噻吩加成提供了室温速率常数。在实验误差范围内,它们不依赖于烷基链中的双键位置。特别值得注意的是
硫基自由基从带有第二个β-取代基的烷基中非常快速地β-消除。它得到了通过激进时钟方法获得的额外证据的支持,