Propargylation of aromatic compounds using Ce(OTf)3 as catalyst
作者:Claudio C. Silveira、Samuel R. Mendes、Guilherme M. Martins
DOI:10.1016/j.tetlet.2012.01.046
日期:2012.3
Ce(OTf)(3) was successfully employed as catalyst for the activation of the hydroxyl group in the Friedel-Crafts reaction of aromatic compounds with propargylic alcohols in nitromethane. The products were obtained in good to excellent yields. (C) 2012 Elsevier Ltd. All rights reserved.
Calcium-Catalyzed Friedel-Crafts Alkylation at Room Temperature
作者:Meike Niggemann、Matthias J. Meel
DOI:10.1002/anie.200907227
日期:2010.5.10
A novel calcium catalyst was found to efficiently functionalize electron‐rich arenes with secondary and tertiary benzylic, propargylic, and allylic alcohols under very mild reaction conditions. The new catalyst system significantly enlarges the scope of the reaction, which was previously limited except for the few examples with secondary benzylicalcohols.