Maleic acid derivatives in the synthesis of 3-substituted 3,4-dihydroquinoxalin-2(1H)-ones
作者:S. S. Rozhkov、K. L. Ovchinnikov、A. V. Kolobov
DOI:10.1007/s11172-014-0407-z
日期:2014.1
A process for preparing 3-substituted 3,4-dihydroquinoxalin-2(1H)-ones is proposed. It is based on the reaction of o-phenylenediamine with amides, di- and mono-esters of maleic acid as well as (E)-3-(5-phenyl-1,3,4-oxadiazol-2-yl)acrylic acid in the presence of N,N′-carbonyl-diimidazole.
提出了一种制备 3-取代 3,4-二氢喹喔啉-2(1H)-酮的工艺。它基于邻苯二胺与马来酸的酰胺、二酯和单酯以及(E)-3-(5-苯基-1,3,4-恶二唑-2-基)丙烯酸在 N,N′-羰基二咪唑存在下的反应。