Elsevier

Tetrahedron Letters

Volume 55, Issue 9, 26 February 2014, Pages 1585-1588
Tetrahedron Letters

Ruthenium(II)–NNN complex catalyzed Oppenauer-type oxidation of secondary alcohols

https://doi.org/10.1016/j.tetlet.2014.01.072Get rights and content

Abstract

Highly efficient Oppenauer-type oxidation of secondary alcohols to the corresponding ketones has been realized by means of the ruthenium(II) complex catalysts bearing a 2-(benzoimidazol-2-yl)-6-(3,5-dimethylpyrazol-1-yl)pyridine ligand. The oxidation reaction underwent in the presence of acetone as oxidant under mild conditions, reaching final TOF values up to 3960 h−1. The hemilability of the ligand is attributed to the high catalytic activity of these Ru(II) complexes.

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Acknowledgments

We are grateful to the National Natural Science Foundation of China (21272232) for support of this research.

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