Titled compound (1) was prepared from benzophenone and 2-(cycloheptatrien-7-yl)ethynylmagnesium bromide. 1 gave the two isomers, i. e., a bicyclo[3.2.2]nonatriene derivative (2) and a formal [2+4] intramolecular cycloaddition product (3). Structural determination of the isomers and plausible mechanisms of the isomerization are discussed.
由
二苯甲酮和2-(
环庚三烯-7-基)
乙炔基溴化镁制备标题化合物(1)。1得到两种异构体,即双环[3.2.2]壬
三烯衍
生物(2)和正式的[2+4]分子内环加成产物(3)。讨论了异构体的结构测定和异构化的可能机制。