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
Enantioselective organocatalytic 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.
使用基于非共价催化机理的基于辛可宁的脲配体,开发了未活化的酮与各种靛红衍生物的对映选择性有机催化直接羟醛反应。使用此协议,我们可以以良好或优异的对映选择性高产率获得官能化的3-烷基-3-羟基吲哚-2-酮。