Picosecond radical kinetics. Alkoxycarbonyl accelerated cyclopropylcarbinyl radical ring openings
作者:Seung-Yong Choi、Martin Newcomb
DOI:10.1016/0040-4020(94)00972-w
日期:1995.1
Rate constants and Arrhenius functions for ringopenings of the (trans-2-ethoxycarbonylcyclopropyl)methyl radical and the (trans-2-tert-butoxycarbonylcyclopropyl)methyl radical were determined by the PTOC-thiol method with PhSeH trapping. At 25°C, these radicals rearrange with rate constants of 7 and 12 × 1010 s−1, respectively.
速率常数和阿仑尼乌斯函数(的环开口反自由基-2-乙氧羰基)甲基和(反式-2-叔-butoxycarbonylcyclopropyl)甲基基团是由PTOC硫醇与PhSeH捕获方法测定。在25°C下,这些自由基的重排速率常数分别为7和12×10 10 s -1。