Synthesis of 1,5- and 1,8-diazaanthraquinones by reaction of aminoquinolinequinones with β-dielectrophiles
作者:Alicia Marcos、Carmen Pedregal、Carmen Avendaño
DOI:10.1016/0040-4020(94)01048-5
日期:1995.2
Easily obtained amino derivatives of quinoline-5,8-quinone (1 and 2) and 4-methyl-(1H)2,5,8-quinolinetrione (3) react with β-dielectrophiles, affording aminoalkylidenemalonates in a convenient procedure. These compounds cyclise thermally to 1,5-diaza-(1H)4,9,10-anthracenetriones (1 0 and 1 9), 1,8-diaza-(1H)4,9,10-anthracenetriones (1 1 and 2 0) and 1,5-diaza-(1H, 5H)2,8,9,10-anthracene-tetraones (1
容易获得的喹啉5,8-醌(1和2)和4-甲基-(1 H)2,5,8-喹啉三酮(3)的氨基衍生物与β-二亲电子试剂反应,以方便的程序得到氨基烷基亚甲基丙二酸酯。这些化合物热环化为1,5-二氮杂-(1 H)4,9,10-蒽酮(1 0和1 9),1,8-二氮杂-(1 H)4,9,10-蒽酮(1 1)和2 0)和1,5-二氮杂-(1 H,5 H)2,8,9,10-蒽-四酮(1 2和2 1)。当应用于芳族前体时,该策略不太方便。β-氧代苯胺的克诺尔环化在两个系统中均失败。