Enantioselective organocatalytic aldol reaction of unactivated ketones with isatins
作者:Suresh Allu、Nagaraju Molleti、Ramachandrarao Panem、Vinod K. Singh
DOI:10.1016/j.tetlet.2011.05.013
日期:2011.8
Enantioselectiveorganocatalytic direct aldol reaction of unactivated ketones with various isatin derivatives was developed using cinchonine based urea ligand employing a noncovalent catalysis mechanism. Using this protocol we can access functionalized 3-alkyl-3-hydroxyindolin-2-ones in high yields with good to excellent enantioselectivities.