Issue 87, 2017

Efficient and selective catalysis for hydrogenation and hydrosilation of alkenes and alkynes with PNP complexes of scandium and yttrium

Abstract

Scandium and yttrium congeneric complexes, supported by a monoanionic PNP ligand, were studied as catalysts for alkene hydrogenation and hydrosilation, and alkyne semihydrogenation and semihydrosilation. The yttrium congener was found to be much more active in all cases, but this greater activity is accompanied by more rapid catalyst decomposition and therefore higher total yields for some of the reactions with the scandium catalyst. Calculations indicate that the reactions may proceed via σ-bond metathesis of the alkyl complexes to form metal hydride intermediates into which alkenes/alkynes insert.

Graphical abstract: Efficient and selective catalysis for hydrogenation and hydrosilation of alkenes and alkynes with PNP complexes of scandium and yttrium

Supplementary files

Article information

Article type
Communication
Submitted
16 aug 2017
Accepted
11 okt 2017
First published
11 okt 2017

Chem. Commun., 2017,53, 11881-11884

Efficient and selective catalysis for hydrogenation and hydrosilation of alkenes and alkynes with PNP complexes of scandium and yttrium

D. S. Levine, T. D. Tilley and R. A. Andersen, Chem. Commun., 2017, 53, 11881 DOI: 10.1039/C7CC06417A

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