到 carbocyclic 混合物的五成员的 zirconacycles 的直接转变具有大合成兴趣。有包含至少二个反应的功能的组或氧化剂的 electrophiles 的 zirconacycles 的反应通过生气联合,增加,或氧化联合反应负担得起各种各样的 carbocycles。在这份报纸,我们在场我们 carbocycles 的调停 zirconacycle 的形成上的最近的结果,包括:(1 ) 有 zirconacycles 的 oxalyl 二氯化物的 1,1-cycloaddition;(2 ) 面对 CuCl 的 zirconacyclopentadienes 的支持 benzoquinone 的联合;(3 ) 到 quinones 的 zirconacyclopentadienes 的 cycloaddition;(4 ) 有面对 CuCl 的 2-bromoacrylate, 2-bromoacrylaldehyde 和 3-bromofuran-2,5-dione 的 zirconacyclopentadiene 的 cycloaddition;(5 ) 一个壶联合二炔属羟和链烯经由 zirconacyclopentadienes 形成 cyclohexene 衍生物;并且(6 ) 有酉旨或酰氯化物到的 decatetraenes 的 dianionic cycloaddition 形成九成员的 carbocycles。
Direct transformation of five-membered zirconacycles to carbocyclic compounds is of great synthetic interest. The reaction of zirconacycles with electrophiles containing at least two reactive functional groups or an oxidant affords various carbocycles through cross coupling, addition, and/or oxidative coupling reactions. In this paper, we present our recent results on the zirconacycle-mediated formation of carbocycles, including: (1) 1,1-cycloaddition of oxalyl dichloride with zirconacycles; (2) benzoquinone-promoted coupling of zirconacyclopentadienes in the presence of CuC1; (3) cycloaddition of zirconacyclopentadienes to quinones; (4) cycloaddition of zirconacyclopentadiene with 2-bromoacrylate, 2-bromoacrylaldehyde and 3-bromofuran-2,5-dione in the presence of CuCl; (5) one-pot coupling of two alkynes and an alkene to form cyclohexene derivatives via zirconacyclopentadienes; and (6) dianionic cycloaddition of decatetraenes with esters or acyl chlorides to form nine-membered carbocycles.