Development of ProPhenol Ligands for the Diastereo- and Enantioselective Synthesis of β-Hydroxy-α-amino Esters
作者:Barry M. Trost、Frédéric Miege
DOI:10.1021/ja4129394
日期:2014.2.26
aldol reaction between glycine Schiff bases and aldehydes is reported. The design and synthesis of new ProPhenol ligands bearing 2,5-trans-disubstituted pyrrolidines was essential for the success of this process. The transformation operates at room temperature and affords syn β-hydroxy-α-amino esters in high yields with good to excellent levels of diastereo- and enantioselectivity.
Chiral Triphenylprolinol Ligands for the Efficient Catalytic Asymmetric Arylation of Aldehydes
作者:Angélica Venturini Moro、Edward R. T. Tiekink、Julio Zukerman-Schpector、Diogo S. Lüdtke、Carlos Roque D. Correia
DOI:10.1002/ejoc.201000336
日期:2010.7
The synthesis of new chiral amino alcohols by Heck arylation of an enecarbamate is described. These compounds were used as chiral ligands for the catalyticasymmetricarylation of aldehydes and can be easily recovered. Chiral, nonracemic diarylmethanols were obtained in high yields and enantioselectivities.