作者:Lorraine Ferrar、Mark Mis、Douglas R. Robello
DOI:10.1016/j.tetlet.2008.04.120
日期:2008.6
The rates of thermal conversion of seven simple dewarbenzene derivatives to their corresponding benzene isomers were measured. Relatively minor substituent changes were found to have profound effects; isomerization rates increased with the number and strength of electron-withdrawing moieties. Surprisingly, the rate of thermal isomerization for one derivative was the same in fluid solution as in a solid
测量了七个简单的杜瓦苯衍生物向其相应的苯异构体的热转化率。发现相对较小的取代基变化具有深远的影响。异构化速率随吸电子部分的数量和强度的增加而增加。令人惊讶地,一种衍生物在流体溶液中的热异构化速率与在固体聚合物基质中的热异构化速率相同,表明该反应的活化体积低。其他初步实验表明,假定的中间体具有某些极性特征。这些数据可以提供对反应机理的一些见解。