Practical enantioselective Diels-Alder and aldol reactions using a new chiral controller system
作者:E. J. Corey、Rene Imwinkelried、Stanislaw Pikul、Yi Bin Xiang
DOI:10.1021/ja00196a081
日期:1989.7
Catalyse par le complexe cyclique Al [−N(SO 2 CF 3 )(CHPh) 2 (CF 3 SO 2 )N-] R, R=i-Bu, CH 3
催化par le complexe cyclique Al [-N(SO 2 CF 3 )(CHPh) 2 (CF 3 SO 2 )N-] R, R=i-Bu, CH 3
Kinetic Resolution of Quaternary and Tertiary β-Hydroxy Esters
作者:Derek J. Schipper、Sophie Rousseaux、Keith Fagnou
DOI:10.1002/anie.200902373
日期:2009.10.19
Selectivity factors: The resolution of tertiary and secondary alcohols, which arise from ketone and aldehyde aldol additions, proceeds in the presence of (1S,2R)‐N‐methylephedrine (see example). The method is technically simple, easily scalable, and provides tertiary and secondary alcohols in high enantiomeric ratios.
The E/Z geometry of the enolate component determines face selection of the aldehyde component in chiral diazaborolidine-directed enantioselective aldol coupling
作者:E.J. Corey、Duck-Hyung Lee
DOI:10.1016/s0040-4039(00)60765-7
日期:1993.3
An analysis of the effect of enolate geometry on transition-state energy explains the stereochemistry of aldol reactions of acetate and propionate esters with aldehydes using as reagent the chiral diazaborolidine 1.