中文摘要：

锆杂环化合物因其多种反应活性而备受关注.2分子1,1-二取代联烯在低价锆物种＂Cp2Zr（II）＂作用下可发生分子间还原偶联形成α,α＇-双亚甲基锆杂环戊烷,反应的区域及立体化学受到取代基空间效应影响显著.α,α＇-双亚甲基锆杂环戊烷中含有两个sp2碳-金属键,与多种亲电试剂体系反应分别生成多种类型有机分子,可为2,5-二卤代-1,5-己二烯、具有1,5-二烯骨架的1,6-二羰基化合物等多功能有机分子提供新合成方法学.

英文摘要：

Zirconacycle has attached much attention owing to its various reactive behaviors. α,α＇-Bismethylenyl zirconacyclopentane could be prepared by reductive coupling reaction of two 1,1-disubstituted allenes promoted by low covalent zirconocene species ＂Cp2Zr（II）＂. The stereo- and regio-chemistry could be affected obviously by steric and electronic effect of the substituents in the allenes. Two sp2 carbon-metallic bonds in α,α＇-bismethylenyl zirconacyclopentane could be quenched by several electrophilic system and afford the novel methodologies for the synthesis of 1,1,6,6-tetrasubstituted 1,5-hexadiene, 2,5-dihalo-1,5-hexadiene and 1,6-dicarbonyl compound with the skeleton of 1,5-hexadiene.