New Ytterbium Complex-catalyzed Multicomponent Reactions for Synthesis of Dihydropyrimidines: [4+2] Cycloaddition vs. Biginelli Type Reaction
作者:Jie Zhu、Mingjie Zhang、Bo Liu、Xiaojuan Li
DOI:10.1246/cl.2009.56
日期:2009.1.5
A new schiff base ytterbium complex was synthesized and used as catalyst for a three-component, one-potreactioninvolving 1,3-keto ester with urea or thiourea and aldehyde. The reactions resulted ...