L-Prolinamides Derived from Chiral and Achiral 1,2-Diamines as Useful Bifunctional Organocatalysts for Direct Diastereo- and Enantioselective Aldol Reaction
作者:Rafael Pedrosa、José M. Andrés、Rubén Manzano、Paula Rodríguez
DOI:10.1002/ejoc.201000616
日期:2010.9
has the same configuration at both stereocenters. Under the same reaction conditions, prolinamide 20, which was synthesized from L -proline and ethylene diamine, without stereocenters at the diamine component, behaved as an excellent enantioselectiveorganocatalyst, giving the aldol products in very high diastereo- and enantioselectivity.