Catalytic Allylic C−H Acetoxylation and Benzoyloxylation via Suggested (η<sup>3</sup>-Allyl)palladium(IV) Intermediates
作者:Lukasz T. Pilarski、Nicklas Selander、Dietrich Böse、Kálmán J. Szabó
DOI:10.1021/ol9023369
日期:2009.12.3
Palladium-catalyzed allylic acetoxylations and benzoyloxylations were carried out using iodonium salts. The reactions proceed under mild conditions with high regio- and stereoselectivity. The catalysis can be performed under both acidic and nonacidic conditions without use of BQ or other external oxidants and activator ligands. Deuterium labeling experiments clearly show that the catalytic reaction
Retention of Regiochemistry of Allylic Esters in Palladium-Catalyzed Allylic Alkylation in the Presence of a MOP Ligand
作者:Tamio Hayashi、Motoi Kawatsura、Yasuhiro Uozumi
DOI:10.1021/ja973150r
日期:1998.3.1
In the palladium-catalyzedallylicalkylation of (E)-3-substituted-2-propenyl acetates (1), 1-substituted-2-propenyl acetates (2), and 1- or 3-deuterio-2-cyclohexenyl acetate (5), which proceeds through 1,3-unsymmetrically substituted π-allylpalladium intermediates, selective substitution at the position originally substituted with acetate was observed by use of a sterically bulky monodentate phosphine