Abstract
A modified tridentate pyridine bisoxazoline (pybox) ligand, possessing gem-diphenyl substitution at C-5 of the oxazoline rings, has been proved to be a very efficient ligand for enantioselective allylic oxidation, one-pot three-component synthesis of propargy-amines, and Friedel–Crafts alkylation of various aromatic compounds. We have shown that a 5',5'-diphenyl grouping in the oxazoline rings of chiral ligands is crucial for higher reaction rates as well as enhanced enantioselectivity.
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