16.

Synthesis and spectroscopic characterization of pyrrole-2,3-diones and their following reactions with 1,2-aromatic diamines

İrfan Koca and İsmail Yıldırım

Department of Chemistry, Faculty of Arts and Sciences, Bozok University, 66200 Yozgat, Türkiye.

Department of Chemistry, Faculty of Arts and Sciences, Erciyes University, 38039 Kayseri, Türkiye.

Abstract: 4-aroyl-5-aryl-2,3-furandiones and N,N-dialkyl urea combine with loss of water yielding the pyrrole-2,3-dione derivatives in moderate yields (47-68%). Then, these compounds were converted into 2(1H)-quinoxalinones with various 1,2-phenylenediamines. The structures and characterizations of the synthesized compounds were established by the 1H- and 13C-NMR, IR and elemental analysis.

Keywords: Furan-2,3-dione; Pyrrole-2,3-dione; Quinoxaline; 1,2-phenylenediamine.