Cyclopentadienes, fulvenes, and fulvalenes. Part IV. 1,2-Diphenylcyclopentadienes
作者:P. Bladon、S. McVey、P. L. Pauson、G. D. Broadhead、W. M. Horspool
DOI:10.1039/j39660000306
日期:——
Attempts to obtain 1,2-diphenylcyclopentadiene led to its Diels–Alder dimer. Evidence for dissociation of this dimer has only been obtained in its reaction with molybdenum carbonyl. By contrast, 1,4-dimethyl-2,3-diphenylcyclopentadiene and 1,2,3-trimethyl-4,5-diphenylcyclopentadiene exist as stable monomers, like all other di-and polyarylcyclopentadienes. Exact structures have been assigned to these
尝试获得1,2-二苯基环戊二烯导致其Diels-Alder二聚体。仅在其与羰基钼反应中得到解离该二聚体的证据。相反,像所有其他二-和聚芳基环戊二烯一样,存在1,4-二甲基-2,3-二苯基环戊二烯和1,2,3-三甲基-4,5-二苯基环戊二烯作为稳定单体。根据它们的nmr光谱,已经为这些和其他芳基环戊二烯以及几种相关的环戊烯衍生物指定了精确的结构。