Palladium-Catalyzed Oxidative sp2 CH Bond Acylation with Aldehydes
作者:Olivier Baslé、Johan Bidange、Qi Shuai、Chao-Jun Li
DOI:10.1002/adsc.200900874
日期:——
An efficient method was developed for the direct acylation of arene sp2 CH bonds with aldehydes using palladium acetate as catalyst and peroxide as oxidant. The solvent‐free oxidativeacylation reaction assisted by a pyridine directing group provides an easy access to aromatic, aliphatic, and optical active ketones.
Pd/Mg-La mixed oxide is used as an efficient catalyst for the oxidative direct acylation of arene sp(2) C-H bonds with alcohols. TBHP was used for in situ oxidation of the alcohols to aldehydes which after coupling with 2-aryl pyridines forms aryl ketones. The catalyst is recovered and used for four cycles. (C) 2013 Elsevier B.V. All rights reserved.