Practical preparation of chiral keto-imine type ONO Schiff base ligands
摘要:
A practical preparation of chiral keto-imine type ONO Schiff base ligands has been reported. Metal complexes of these Schiff bases work as efficient chiral catalysts in a variety of asymmetric reactions. (C) 2013 Elsevier Ltd. All rights reserved.
Direct enantioseparation of diarylmethylamines with an ortho-hydroxy group via diastereomeric salt formation and their application to the enantioselective addition reaction of diethylzinc
Two chiral diarylmethylamines with a phenolic hydroxy group at their ortho positions (1c and 1d) were synthesized, and their direct enantioseparationviadiastereomericsaltformation was investigated. Crystallographic analyses of the diastereomeric salts involving 1c were conducted: water molecules incorporated in the space played an important role in chiral recognition. Enantiopure 1 were applied