Secondary Benzylation with Benzyl Alcohols Catalyzed by A High-Valent Heterobimetallic Ir−Sn Complex
作者:Susmita Podder、Joyanta Choudhury、Sujit Roy
DOI:10.1021/jo0625094
日期:2007.4.1
A highly efficient secondary benzylation procedure has been demonstrated using a high-valent heterobimetallic complex [Ir2(COD)2(SnCl3)2(Cl)2(μ-Cl)2] 1 as the catalyst in 1,2-dichloroethane to afford the corresponding benzylated products in moderate to excellent yields. The reaction was performed not only with carbon nucleophiles (arenes and heteroarenes) but also with oxygen (alcohol), nitrogen (amide
A convenient method for the synthesis of 4,4-diarylbut-1-enes via the successive allylation of aromatic aldehydes and the Friedel–Crafts alkylation reaction of aromatic nucleophiles with the intermediary benzyl silyl ethers using HfCl4 or Cl2Si(OTf)2
The three-component coupling reaction among aromaticaldehydes, allyltrimethylsilane and aromatic nucleophiles is efficiently performed by the promotion of HfCl4. A similar reaction occurs using allyltributyltin as the first nucleophile to aromaticaldehydes with a catalytic amount of Cl2Si(OTf)2 generated in situ from SiCl4 and AgOTf.
Palladium catalyzed isomerization of alkenes: a pronounced influence of an o-phenol hydroxyl group
作者:Jinmin Fan、Changfeng Wan、Qiang Wang、Linfeng Gao、Xiaoqi Zheng、Zhiyong Wang
DOI:10.1039/b907426k
日期:——
A novel palladium catalyzed isomerization of alkenes has been found, where an ortho-phenol hydroxyl group has a pronounced influence on the isomerization.