研究室工作進展 Nov. 30th, 2012

 Reactivity of Seven-membered Azazirconacycloallenes and Four-membered Zirconacycles towards Diphenylacetonitrile

Jing Zhao, Shaoguang Zhang, Wen-Xiong Zhang* and Zhenfeng Xi*

Organometallics 2012, DOI: 10.1021/om300949a

The reaction of seven-membered azazirconacycloallene with Ph2CHCN is achieved to yield the zirconocene complex with three fused rings and a keteniminate ligand. Further reactivity towards propargyl bromide or propionyl chloride shows that the keteniminate ligand can be substituted by halogen atoms (Br or Cl). In addition, the reaction of the strained four-membered zirconacycle with Ph2CHCN gives zirconocenes possessing vinyl-imine and keteniminate species.

背景介紹

金屬有機雜環化合物是許多過渡金屬催化或者促進的有機反應的中間體。本小組通過合成、分離金屬雜五元環以及金屬雜四元環活性中間體，在理解相應反應的機理的同時，利用這些活性中間體發展了一系列有機合成新方法，合成得到其它方法難于合成的新型金屬有機化合物以及結構多樣的環狀有機化合物（相關評述見Congyang Wang and Zhenfeng Xi,* Chem. Soc. Rev. 2007, 36, 1395-1406；Wen-Xiong Zhang, Shaoguang Zhang, and Zhenfeng Xi,* Acc. Chem. Res. 2011, 44, 541-551）。

   本工作是在以上研究思路基礎上的進一步展開。