Collect. Czech. Chem. Commun.
2007, 72, 1057-1068
https://doi.org/10.1135/cccc20071057
Imidazolium-Tagged Ferrocene Ligands
Radovan Šebesta*, Mária Mečiarová*, Viera Poláčková, Eva Veverková, Iveta Kmentová, Eva Gajdošíková, Ján Cvengroš, Radovan Buffa and Vladimír Gajda
Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University, Mlynská dolina, 842 15 Bratislava, Slovakia
Abstract
New chiral imidazolium-tagged ferrocene ligands were prepared. Diastereoselective ortho-lithiation of the Ugi amine was employed in the synthesis of planar chiral P/P, P/N and Se/N ligands. These compounds were attached through six-carbon spacers to an imidazolium moiety. Pd-complexes of these ligands were successfully used as catalysts for asymmetric allylic substitution in ionic liquids.
Keywords: Ferrocenyl phosphines; Immobilized catalysts; Ionic liquids; Allylic substitutions; Chiral ligands.
References: 35 live references.
