Catalytic asymmetric dehydration of β-alkenyl-or alkynylsubstituted β-hydroxy esters by kinetic resolution has been investigated with five different chiral ligands 3-7. The kinetic resolution of a variety of racemic β-hydroxy tert-butyl esters in the presence of a prolinol chiral ligand and BrZnCH 2 CO 2 tBu provided highly enantio-enriched β-hy-
Dynamic resolution of esters (I) allows the preparation of various title compounds without the need of optically pure amino acid derivatives. -(KIM, Y.; KANG, K. H.; CHOI, E. T.; LEE, M. H.; PARK*, Y. S.; Bull. Korean Chem.
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