Synthesis of methyl 4-aryl-4-oxo-2-[(4-sulfamoylphenyl)amino]but-2-enoates and their reaction with ninhydrin
作者:V. L. Gein、O. V. Bobrovskaya、M. V. Dmitriev
DOI:10.1134/s1070428017060148
日期:2017.6
The reaction of methyl 4-aryl-2,4-dioxobut-2-enoates with 4-aminobenzenesulfonamide in acetic acid–ethanol (1: 1) afforded methyl (2Z)-4-aryl-4-oxo-2-(4-sulfamoylanilino)but-2-enoates which reacted with ninhydrin in glacial acetic acid to give 3-aroyl-4-(4-sulfamoylanilino]-5H-spiro[furan-2,2′-indene]-1′,3′,5-triones.
4-芳基-2,4-二氧代丁-2-烯酸甲酯与4-氨基苯磺酰胺在乙酸-乙醇(1:1)中的反应得到甲基(2 Z)-4-芳基-4-氧代-2-(4 -茚磺酰氨基)丁-2-烯酸酯,其与茚三酮在冰醋酸中反应,生成3-芳酰基-4-(4-磺酰胺基丙氨酸)-5 H-螺环[呋喃-2,2'-茚] -1',3' ,5-三酮。