A ready access to a new family of planar chiral ferrocenes, the (RFc,RS)-2-amino substituted 1-tert-butylsulfinylferrocenes, is described; in the case of the sulfonamide series enantioselectivities of up to 96% were obtained in the addition of Et2Zn to aromatic aldehydes.
Aminosubstituted tert-butylsulfinylferrocenes as a new family of chiral ligands: asymmetric addition of diethylzinc to aldehydes
J. Priego, O. G. Mancheño, S. Cabrera and J. C. Carretero, Chem. Commun., 2001, 2026 DOI: 10.1039/B105962A
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