Direct Oxidation of β-Aryl Substituted Aldehydes to α,β-Unsaturated Aldehydes Promoted by an<i>o</i>-Anisidine-Pd(OAc)<sub>2</sub>Co-catalyst
作者:Jie Liu、Jin Zhu、Hualiang Jiang、Wei Wang、Jian Li
DOI:10.1002/asia.200900238
日期:2009.11.2
o‐anisidine‐Pd(OAc)2 catalytic system for the direct co‐catalytic Saegusa oxidation of β‐aryl substituted aldehydes to α,β‐unsaturatedaldehydes has been developed. The use of o‐anisidine in place of (S)‐diphenylprolinol made the process more simply and cost‐effective. The process not only features the use of unmodified aldehydes rather than enol silylethers, but also gives moderate to good yields (44–72 %).