Ring opening and hydrogen-atom transfer trapping of the bicyclo[2.1.0]pent-2-yl radical
作者:Martin Newcomb、M. Beata Manek、Anne G. Glenn
DOI:10.1021/ja00003a031
日期:1991.1
Relative rate constants (k r /k H ) for ring opening of the bicyclo [2.1.0] pent-2-yl radical (1) to the cyclopent-3-enyl radical and trapping of radical 1 with t-BuSH, PhSH, and PhSeH in solvent THF were measured at temperatures between −78 and 50 o C. The hydrogen atom donors reacted more rapidly with radical 1 than with the cyclopropylcarbinyl radical. Rate constants for ring opening of 1 (k r )
双环 [2.1.0] 戊-2-基自由基 (1) 开环至环戊-3-烯基自由基和用 t-BuSH、PhSH 和捕获自由基 1 的相对速率常数 (kr /k H )溶剂 THF 中的 PhSeH 在 -78 到 50 o C 之间的温度下测量。氢原子供体与自由基 1 的反应比与环丙基羰基自由基反应更快。可以通过马库斯理论估计 k H 的值来获得 1 (kr ) 开环的速率常数
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