A domino amino-lactonisation of arylidene pyruvic acids (APAs) by amines in aqueous media
作者:Morteza Shiri、Majid M. Heravi、Bita Soleymanifard、Hendrik G. Kruger、Mohammad Ali Zolfigol
DOI:10.1016/j.tet.2013.02.036
日期:2013.4
The aqueous reaction of arylidene pyruvic acids (APAs) with arylamines or urea under refluxing conditions leading to the formation of 3-(amino)-5-aryl-furan-2(5H)-one, without catalyst, is described. Also (E)-4-(4-chlorophenyl)-2-oxobut-3-enoic acid reacts with 1,2-phenylenediamine to form (E)-3-(4-chlorostyryl)quinoxalin-2(1H)-one under the same conditions. Excellent yields were observed after filtration