provide both allyl and diene coordination to the Ti(C5H5) fragments, resulting in 16 electron configurations. On standing, these species undergo cage rearrangements, via CC bond activation reactions. Structural data have been obtained for a number of the fused ring species, as well as one of the rearrangement products.
几种α,ω-二炔与半开放的
钛茂
金属配合物[M(C 5 H 5)(2,4-C 7 H 11)(PR 3)]的反应(C 7 H 11 =二甲基
戊二烯基)导致5 + 2 + 2环结构,产生九元环与四元及更大的环融合。这些反应耐受显着的功能化,甚至允许存在杂原子,例如氧和氮。九元环同时为Ti(C 5 H 5)片段提供烯丙基和二烯配位,从而形成16个电子构型。站立时,这些物种通过C进行笼子重排C键活化反应。已经获得了许多稠合环物种以及一种重排产物的结构数据。