Rhodium-Catalyzed Asymmetric Addition of Potassium Organotrifluoroborates toN-Sulfonyl Ketimines
摘要:
A rhodium-catalyzed asymmetric addition of readily available potassium organotrifluoroborates to both N-tosyl and N-nosyl ketimines has bean developed. High enantioselectivity has been achieved by using a chiral diene ligand, and the nosyl group of the addition products can be easily removed while retaining the enantiomeric purity.
A rhodium-catalyzed addition of sodium tetraarylborates to N-tosyl ketimines is described. Highly efficient asymmetric catalysis has been achieved by employing a chiral diene ligand, constructing chiral amine derivatives possessing alpha-tetrasubstituted carbon stereocenters with high enantioselectivity.
Rhodium-Catalyzed Asymmetric Addition of Potassium Organotrifluoroborates to<i>N</i>-Sulfonyl Ketimines
A rhodium-catalyzed asymmetric addition of readily available potassium organotrifluoroborates to both N-tosyl and N-nosyl ketimines has bean developed. High enantioselectivity has been achieved by using a chiral diene ligand, and the nosyl group of the addition products can be easily removed while retaining the enantiomeric purity.