A Hg(ClO<sub>4</sub>)<sub>2</sub>·3H<sub>2</sub>O Catalyzed Sakurai–Hosomi Allylation of Isatins and Isatin Ketoimines Using Allyltrimethylsilane
作者:Zhong-Yan Cao、Yan Zhang、Cong-Bin Ji、Jian Zhou
DOI:10.1021/ol202705g
日期:2011.12.16
It is reported that Hg(ClO4)(2)center dot 3H(2)O could efficiently activate the cheap but less reactive allyltrimethylsilane for the allylation of isatins or isatin ketoimines, with catalyst loading down to 0.1 mol %. This is the first example of Sakurai-Hosomi allylation of ketoimines using allyltrimethylsilane. A rare example of chiral mercury catalysis is also reported.
Bismuthtriflate-catalyzed Reaction of<i>N</i>-Alkylisatins with Allyltrimethylsilane
作者:Harhadas M. Meshram、Palakuri Ramesh、B. Chennakesava Reddy、G. Santosh Kumar
DOI:10.1246/cl.2011.357
日期:2011.4.5
An efficient and generalmethod has been described for the synthesis of 3-allyl-3-hydroxyoxindole by the reaction of isatins with allyltrimethylsilane in the presence of Bi(OTf)3·4H2O. The method i...