Abstract
Derivatives of (+)-camphoric acid were prepared by a short and simple synthetic sequence and proved to be excellent ligands for the enantioselective ethylation of benzaldehyde with diethylzinc, with ees of up to 96% being obtained. The most efficient ligand was tested with several aromatic aldehydes and ees of up to 99% were observed. Structural features of the ligands are determinant for achieving high enantioselectivities.
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