Ionic liquid supported on magnetic nanoparticles as highly efficient and recyclable catalyst for the synthesis of β-keto enol ethers
摘要:
A magnetically ionic liquid supported on gamma-Fe2O3 nanocatalyst (AlxCly-IL-SiO2@gamma-Fe2O3) was synthesized and evaluated as a recoverable catalyst for the synthesis of beta-keto enol ethers. The immobilized catalyst proved to be effective and provided the products in high to excellent yield at room temperature. Moreover, the catalyst could be easily recovered by magnetic separation and recycled for six times without significant loss of its catalytic activity. (C) 2013 Elsevier B.V. All rights reserved.
Iron(III) Tosylate in the Preparation of Dimethyl and Diethyl Acetals from Ketones and <font> <b>β</b> </font>-Keto Enol Ethers from Cyclic <font> <b>β</b> </font>-Diketones
作者:Horacio Mansilla、María M. Afonso
DOI:10.1080/00397910802219361
日期:2008.7.24
Abstract An efficient method for conversion of ketones to their corresponding dimethyl and diethyl acetals and of cyclic β-diketones into β-keto enol ethers using Fe(OTs)3 as a catalyst is described.