On Baldwin's kinetic barrier against 5-(enol-endo)-exo-trigonal closures: a comparison of ionic and analogous radical reactions, and a new synthesis of cyclopentanones
作者:Derrick L. J. Clive、David R. Cheshire
DOI:10.1039/c39870001520
日期:——
The kinetic barrier that impedes ionic 5-(enol-endo)-exo-trigonal closures does not play such a dominant role in the case of α-oxo radicals (17); these radicals cyclize directly to cyclopentanones in a process that constitutes a synthetic method for converting allylic alcohols (12) into bicyclo[n.3.0]alkanones (19).
在α-氧代自由基的情况下,阻碍离子性5-(烯醇-内)-外-三角封闭的动力学屏障不发挥这种主导作用(17)。这些基团直接环化成环戊酮在构成的合成方法,用于将烯丙基醇(过程12)插入双环[ Ñ .3.0]烷酮(19)。