Addition of cycloheptatrienylidene and diphenylcyclopropenylidene to tetracyclones
作者:Tsutomo Mitsuhashi、W. M. Jones
DOI:10.1039/c39740000103
日期:——
Addition of cycloheptatrienylidene to tetracyclones gives the benzocycloheptatrienes (9) and (10) arising from the intermediates (5) and (7) which are believed to equilibrate through the bis-norcaradiene (6); addition of 2,3-diphenylcyclopropenylidene gives products that would be expected of 1,4-addition of the carbene to the diene system.