GREFFAGE DE DERIVES CHIRAUX DU GERMANIUM SUR DES SURFACES METALLIQUES. GENES DE CATALYSEURS HETEROGENES ASYMETRIQUES PAR VOIE CHIMIE ORGANOMETALLIQUE DE SURFACE

Translated title of the contribution: Surface organometallic chemistry of germanium: Reactivity of chiral germane derivatives towards rhodium supported onto silica

M. Taoufik, C. Santini*, J. M. Basset, J. P. Candy

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The chiral organogermane H3GeAdCH2CO2[(-)-menthyl], 2, reacts selectively with the metallic surface of catalyst Rh/SiO2 to afford the surface species {[H(x)GeAdCH2CO2(-)-menthyl](y)[Ge(o)]0,3} Rh(s)/SiO2; y increasing from 0 to 0,7 when the quantity of 2 by surface atom of rhodium varies from 0,3 to 1. Catalysts with y = 0,3 and 0,5 show low activity and give week enantioselective excess for the asymmetric hydrogenation of ketocompounds and alkene derivatives. These results can be explained either by electronic effect of germanium or steric hindrance of alkyl group.

Translated title of the contributionSurface organometallic chemistry of germanium: Reactivity of chiral germane derivatives towards rhodium supported onto silica
Original languageFrench
Pages (from-to)1969-1974
Number of pages6
JournalJournal de Chimie Physique et de Physico-Chimie Biologique
Volume94
Issue number11-12
DOIs
StatePublished - Jan 1 1997

Keywords

  • Enantioselectivity
  • Heterogeneous catalyst
  • Organogermane

ASJC Scopus subject areas

  • Biochemistry

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