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Title

Asymmetric conjugate addition of diethyl zinc to enones with chiral phosphine ligands

Authors
Burton, Jonathan
Vastra, Johann
Mangeney, Pierre
Published in Tetrahedron: Asymmetry. 1997, vol. 8, no. 24, p. 3987-3990
Abstract Chiral bidentate aryl- and alkyl phosphines (0.5%) coordinated to copper(II) triflate (0.5%) are efficient catalysts for the asymmetric conjugate addition of diethyl zinc to cyclohexen-2-one, chalcone and benzalacetone. Among the chiral phosphines tested, (S)-Norphos, (S,S)-Chiraphos and (R)-Prophos gave the best enantiomeric excesses (44%, 44% and 36% respectively).
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ALEXAKIS, Alexandre et al. Asymmetric conjugate addition of diethyl zinc to enones with chiral phosphine ligands. In: Tetrahedron: Asymmetry, 1997, vol. 8, n° 24, p. 3987-3990. https://archive-ouverte.unige.ch/unige:8059

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Deposited on : 2010-06-21

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