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Title

Asymmetric conjugate addition of diethylzinc to enones with chiral phosphorus ligands derived from TADDOL

Authors
Vastra, Johann
Burton, Jonathan
Mangeney, Pierre
Published in Tetrahedron Letters. 1998, vol. 39, no. 43, p. 7869-7872
Abstract The asymmetric conjugate addition of diethyl zinc to cyclohexen-2-one, chalcone and benzalacetone was studied with 0.5% copper (II) triflate and 1% chiral phosphorus ligands derived from TADDOL. Among the several ligand tested, the cyclic phosphite obtained with 1S,2R phenylcyclohexanol gave up to 96% ee of conjugate adduct to cyclohexenone.
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ALEXAKIS, Alexandre et al. Asymmetric conjugate addition of diethylzinc to enones with chiral phosphorus ligands derived from TADDOL. In: Tetrahedron Letters, 1998, vol. 39, n° 43, p. 7869-7872. https://archive-ouverte.unige.ch/unige:8091

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Deposited on : 2010-06-21

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