Palladium-Catalyzed CH Bond Acetoxylation: An Approach to<i>ortho</i>-Substituted Hydroxy[2.2]paracyclophane Derivatives
作者:Petra Lennartz、Gerhard Raabe、Carsten Bolm
DOI:10.1002/adsc.201200625
日期:2012.11.26
The palladium-catalyzed direct CH bondacetoxylation of [2.2]paracyclophanes has been investigated. Various mono- and disubstituted [2.2]paracyclophanes were subjected to typical Sanford acetoxylation conditions. Oxime ethers, an oxime acetate, a pyridine, and a pyrazole with [2.2]paracyclophane cores underwent direct ortho-acetoxylation in good to excellent yields using 1–5 mol% of palladium(II) acetate