The Thermal [2+2] Cycloaddition of 1-Halo-2-(9-fluorenylidene)ethylene to Afford Fluorene-9-spiro-1′-[2′-halo-3′-(9-fluorenylidene)-4′-halomethylene]cyclobutane
作者:Fumio Toda、Hiroharu Motomura、Hirofumi Oshima
DOI:10.1246/bcsj.47.467
日期:1974.2
The thermal [2+2]cycloaddition products of 1-chloro-(II) and 1-bromo-2-(9-fluorenylidene)ethylene (X) were found to be two head-to-tail dimers, fluorene-9-spiro-1′-[2′-chloro-3′-(9-fluorenylidene)-4′-chloromethylene]cyclobutane (VI) and its bromo-analog (XI) respectively.
1-氯-(II)和1-溴-2-(9-芴基亚甲基)乙烯(X)的热[2+2]环加成产物被发现为两个头尾相接的二聚体,分别为芴-9-螺-1′-[2′-氯-3′-(9-芴基亚甲基)-4′-氯亚甲基]环丁烷(VI)及其溴类似物(XI)。