Abstract A one-pot synthesis for the preparation of N-alkenyl-malonamides and N-alkenyl-thiomalonamides was developed. 5-[Hydroxy/mercapto(aryl/alkylamino)methylene]-2,2-dimethyl-1,3-dioxane-4,6-dione act as a source of ketenes that react with the tautomeric form of alkyl-(2-phenyl-propylidene)-amines. A possible [2 + 2] or [4 + 2] cycloaddition product of ketene to imines was not observed. GRAPHICAL
摘要 开发了一种用于制备N-烯基-丙二酰胺和N-烯基-
硫代丙二酰胺的一锅法合成方法。5-[羟基/巯基(芳基/烷基
氨基)亚甲基]-2,2-二甲基-1,3-
二恶烷-4,6-二酮作为烯酮的来源,与烷基-(2-苯基)的互变异构形式反应-亚丙基)-胺。未观察到
乙烯酮与
亚胺的可能的[2+2]或[4+2]环加成产物。图形概要