Synthesis of stable 1,4-diionic organophosphorus compounds from the reaction between triphenylphosphine and diaroylacetylenes in the presence of 5-aryl-4-quinoxalin-2-yl-furan-2,3-diones

Abstract

GRAPHICAL ABSTRACT ABSTRACT Novel 1,4-diionic organophosphorus compounds have been obtained efficiently from the one-pot three-component reaction of triphenylphosphine, diaroylacetylenes and 5-aryl-4-quinoxalin-2-yl-furan-2,3-diones in 1,2-dichloroethane. The synthesized compounds were characterized by different spectroscopic methods and their structure was confirmed in one case by single crystal X-ray diffraction.