Aminosubstituted tert-butylsulfinylferrocenes as a new family of chiral ligands: asymmetric addition of diethylzinc to aldehydes.
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.
Priego
J
J
Departamento de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid 28049, Madrid, Spain.
García Mancheño
O
O
Cabrera
S
S
Carretero
J C
JC