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  • Title: Novel N,N,P-tridentate ligands for the highly enantioselective copper-catalyzed 1,4-addition of dialkylzincs to enones.
    Author: Kawamura K, Fukuzawa H, Hayashi M.
    Journal: Org Lett; 2008 Aug 21; 10(16):3509-12. PubMed ID: 18616255.
    Abstract:
    Use of 0.25 mol % of the N, N, P-tridentate ligand containing the 2-quinolyl moiety ( 1 and 2) and 0.1 mol % of Cu(OTf) 2 enabled the enantioselective 1,4-addition of dialkylzincs to cyclic enones to produce 1,4-adducts in up to 99% ee.
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