An air oxidizable bimetallic palladium (II) catalyst for asymmetric allylic oxidation of olefins in acetic acid

AK El-Qisiari, HA Qaseer, PM Henry

Index: El-Qisiari, Arab K.; Qaseer, Hanan A.; Henry, Patrick M. Tetrahedron Letters, 2002 , vol. 43, # 23 p. 4229 - 4231

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Citation Number: 29

Abstract

A bimetallic palladium (II) complex containing a triketone ligand and a bridging diphosphine ligand oxidizes olefins in acetic acid to allylic acetates by a direct air oxidation, which does not require intermediate redox systems. When the diphosphine is chiral, an asymmetric reaction occurs which gives enantioselectivities between 52 and 78% for cyclic olefins.