NONLINEAR EFFECTS IN ASYMMETRIC CATALYSIS

Seemingly unusual phenomena may occur in asymmetric catalysis involvin g partially resolved ligands. Deviations from linearity (between the e e of the ligand and the ee of the product) are possible, and various c ases are considered using simplified models. The fundamental features are highlighted in models taking into account diastereomeric associati ons inside (model 1) or outside (model 2) the catalytic cycle. Various cases found experimentally are considered.