화학공학소재연구정보센터
Journal of Molecular Catalysis A-Chemical, Vol.157, No.1-2, 59-63, 2000
Chiral pyridinyl-oxazolines as ligands for copper(I)-catalyzed asymmetric cyclopropanation
New chiral ligands containing oxazoline unit and pyridine separated by a methylene group 3 have been synthesized from enantiomerically pure amino alcohols and 2-picoline using a convenient procedure. Comparative investigation of ligands 3 with chiral conjugate pyridinyl-oxazoline ligands 2 and quinolinyl-oxazoline ligands 1 in copper(I)-catalyzed asymmetric cyclopropanation of styrene with diazoacetates was described.