Facile Catalyst-Free Allylation of Isatins Under Mild Conditions in Dimethylformamide
作者:Li-Na Jia、Lin Peng、Liang-Liang Wang、Jian-Fei Bai、Ji-Ya Fu、Qing-Chun Huang、Fei-Ying Wang、Xiao-Ying Xu、Li-Xin Wang
DOI:10.2174/157017811795685072
日期:2011.6.1
The catalyst-free allylation of isatins with allyltrichlorosilane was performed smoothly in DMF under mild conditions and moderate to excellent yields (60%-94%) were obtained. This protocol provided a new and efficient approach for the preparation of 3-allyl-3-hydroxy-2-oxindoles.
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...