New syntheses of acridin-9(10H)-ones were developed. One involves a two-step transformation, namely the Diels-Alder reactions of (E)-1-methyl-2-styrylquinolin-4(1H)-ones with N-methylmaleimide in refluxing toluene, followed by oxidation of the formed adducts. The second consists in an one-pot procedure using 1,2,4-trichlorobenzene as solvent at 180 ËC. The effect of microwave irradition and Lewis acid catalysts in these cycloaddition reactions was also investigated.
开发了
吖啶-9(10H)-酮的新合成方法。其中一种涉及两步转化,即(E)-1-甲基-
2-苯乙烯基喹啉-4(1H)-酮与 N-甲基马来
酰亚胺在回流
甲苯中的 Diels-Alder 反应,然后氧化形成的加合物。第二种方法是以 1,2,4-
三氯苯为溶剂,在 180 ℃ 下进行单锅反应。此外,还研究了微波辐照和
路易斯酸催化剂在这些环加成反应中的作用。