研究室工作进展 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.

背景介绍

金属有机杂环化合物是许多过渡金属催化或者促进的有机反应的中间体。本小组通过合成、分离金属杂五元环以及金属杂四元环活性中间体，在理解相应反应的机理的同时，利用这些活性中间体发展了一系列有机合成新方法，合成得到其它方法难于合成的新型金属有机化合物以及结构多样的环状有机化合物（相关评述见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础上的进一步展开。