Tetrahedron Asymmetry p. 921 - 924 (2005)
Update date:2022-08-04
Topics:
Clavier, Herve
Coutable, Ludovic
Guillemin, Jean-Claude
Mauduit, Marc
Chiral alkoxy-imidazolinium salts are easily available via a five-step procedure starting from β-aminoalcohols. This new family of alkoxy-N-heterocyclic carbene (NHC) precursors is shown to be highly active in the enantioselective copper-catalysed conjugate addition to cyclic enones. Complete conversion with low catalyst loading and good enantiomeric excesses up to 93% were obtained at room temperature.
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