Ionic liquid mediated 1,3-dipolar cycloaddition of azomethine ylides: a facile and green synthesis of novel dispiro heterocycles
作者:Renuka Jain、Kanti Sharma、Deepak Kumar
DOI:10.1016/j.tetlet.2012.02.029
日期:2012.4
A greener, facile and efficient one-pot, three-component procedure for the synthesis of novel dispiropyrrolidine-bisoxindole derivatives by cycloaddition trapping of azomethine ylides generated in situ, via decarboxylative condensation of isatin with sarcosine (α-amino acid), has been reported in [bmim]PF6, an ionic liquid as a recyclable solvent in excellent yield without using any catalyst. This