Nano-Mgo-Catalyzed One-Pot Synthesis of Phosphonate Ester Functionalized 2-Amino-3-Cyano-4<i>H</i>-Chromene Scaffolds at Room Temperature
作者:Goutam Brahmachari、Sujay Laskar
DOI:10.1080/10426507.2014.903484
日期:2014.8.3
Abstract A facile and efficient protocol for one-potthree-componentsynthesis of structurallydiverse (2-amino-3-cyano-4H-chromen-4-yl)phosphonic acid diethyl esters from the reaction of salicylaldehydes, malononitrile (or ethyl cyanoacetate), and triethylphosphite using basic nanocrystalline MgO as catalyst in aqueous ethanolic medium at roomtemperature has been developed. Nano-MgO has been prepared