[Pd(NHC)(PR3)] Complexes: Versatile Tools for Tandem Dehydrogenation–Hydrogenation Processes

Olivier Songis; Catherine S. J. Cazin

doi:10.1055/s-0033-1339669

Synlett, Table of Contents

Synlett 2013; 24(15): 1877-1881
DOI: 10.1055/s-0033-1339669

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[Pd(NHC)(PR₃)] Complexes: Versatile Tools for Tandem Dehydrogenation–Hydrogenation Processes

Olivier Songis

EaStCHEM School of Chemistry, University of St Andrews, St Andrews, KY16 9ST, UK Fax: +44(0)1334463808 Email: cc111@st-andrews.ac.uk

,

Catherine S. J. Cazin*

EaStCHEM School of Chemistry, University of St Andrews, St Andrews, KY16 9ST, UK Fax: +44(0)1334463808 Email: cc111@st-andrews.ac.uk

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Abstract

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Abstract

Homogeneous Pd(0) complexes are powerful tools for numerous catalytic reactions. Recent work has demonstrated the unique properties displayed by [Pd(NHC)(PR₃)] catalysts in the activation of ammonia borane (AB) and formic acid, with the subsequent formation of hydrogen. An understanding of the mechanism allowed for the design of a new dehydrogenation–hydrogenation tandem process using ‘hydrogen storage materials’. The hydrogenations of alkenes and alkynes were successfully performed at low catalyst loadings of Pd(0) species and mild conditions. Such tandem process represents a safe and innovative alternative to classic hydrogenation protocols.

Key words

tandem reaction - hydrogenation - dehydrogenation - Pd(0) - hydrogen storage material

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References

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