Allylic Oxidations of Terminal Olefins Using a Palladium Thioether Catalyst
作者:William H. Henderson、Christopher T. Check、Nicolas Proust、James P. Stambuli
DOI:10.1021/ol902905w
日期:2010.2.19
A palladium catalyst that converts terminal olefins to linear allylic acetates at lower catalyst loadings and faster reaction times than current systems is reported. This reaction can be conducted using benzoquinone as the oxidizing agent or catalytic amounts of copper and hydroquinone under one atmosphere of oxygen. Preliminary reactivity studies of π-allylpalladium complexes under our reaction conditions
A Survey of Sulfide Ligands for Allylic CH Oxidations of Terminal Olefins
作者:Chi “Chip” Le、Kamala Kunchithapatham、William H. Henderson、Christopher T. Check、James P. Stambuli
DOI:10.1002/chem.201301787
日期:2013.8.19
to a THT! Screening a diverse library of thioether ligands led to the discovery of tetrahydrothiophene (THT) as a highly reactive and selective ligand for Pd‐catalyzed allylicCHoxidation reactions (see scheme). This novel ligand system provides some of the highest reported yields for the formation of (E)‐linear allylic acetates through allylicCH activation chemistry (BQ = 1,4‐benzoquinone).