2026-05-25T01:41:54Z https://www.eurjchem.com/index.php/eurjchem/oai

oai:ojs.www.eurjchem.com:article/413 2011-12-31T08:09:40Z eurjchem:ART driver

An efficient synthesis of quinoxalines catalyzed by monoammonium salt of 12-tungstophosphoric acid Kunkuma, Vijayalakshmi Bethala, Lakshmi Anu Prabhavathi Devi Bhongiri, Yadagiri Rachapudi, Badari Narayana Prasad Potharaju, Seetharamanjaneya Sai Prasad Quinoxalines Benzil 1 2-Phenylenediamines 12-Tungstophosphoric acid Heteropoly acids Dichloroethane Monoammonium salt of 12-tungstophosphoric acid [(NH4)H2PW12O40] catalyst was used for the synthesis of biologically important quinoxaline derivatives in excellent yields from various aromatic 1,2-dicarbonyl and 1,2-diamines. The methodology has the advantages of mild reaction conditions with simple workup procedure, even for the synthesis of quinoxaline derivatives from sterically hindered diamine. Atlanta Publishing House LLC 2011-12-31 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://www.eurjchem.com/index.php/eurjchem/article/view/413 10.5155/eurjchem.2.4.495-498.413 European Journal of Chemistry; Vol. 2 No. 4 (2011): December 2011; 495-498 2153-2257 2153-2249 eng https://www.eurjchem.com/index.php/eurjchem/article/view/413/PDF