p-Toluidine–acetic acid as a catalyst for a one-pot efficient synthesis of quinoxaline and pyridopyrazin derivatives contain polyhydroxy chain with use of monosaccharides
作者:Ali Darehkordi、Fariba Rahmani、Mahin Ramezani、Fahimeh Askari、Hadi Amiri Rudbari、Giuseppe Bruno
DOI:10.1007/s13738-014-0434-6
日期:2014.12
o-Phenylenediamine derivatives and 2,3-diaminopyridine react with d-monosaccharides in ethanol–water in the presence of a catalytic amount of acetic acid along with p-toluidine under reflux condition to afford the corresponding quinoxalines or pyridopyrazin in high yields. These structures were confirmed by FT-IR, 1H-NMR, 13C-NMR, elemental analysis and single-crystal X-ray analysis.
邻苯二胺衍生物和2,3-二氨基吡啶在乙酸、对甲苯胺以及乙醇-水的催化下,回流反应与d-单糖反应,以高产率生成相应的喹喔啉或吡啶并吡嗪。这些结构通过FT-IR、1H-NMR、13C-NMR、元素分析和单晶X射线分析得到证实。