Duthaler, Rudolf O.; Herold, Peter; Lottenbach, Willy, Angewandte Chemie, 1989, vol. 101, # 4, p. 490 - 491
作者:Duthaler, Rudolf O.、Herold, Peter、Lottenbach, Willy、Oertle, Konrad、Riediker, Martin
DOI:——
日期:——
Kinetic Resolution of β-Alkenyl-, β-Alkynyl- and β-Flavenyl-Substituted β-Hydroxy Esters in Asymmetric Dehydration
作者:Min Hee Lee、Eui Ta Choi、Dajung Kim、Yoon Min Lee、Yong Sun Park
DOI:10.1002/ejoc.200800807
日期:2008.11
Catalytic asymmetricdehydration of β-alkenyl- or alkynyl-substituted β-hydroxyesters by kineticresolution has been investigated with five different chiral ligands 3–7. The kineticresolution of a variety of racemic β-hydroxy tert-butyl esters in the presence of a prolinol chiral ligand and BrZnCH2CO2tBu provided highly enantio-enriched β-hydroxyesters 9–22 with selectivity factors ranging from