Facile synthesis of 4-alkoxycarbonylisoquinoline-1,3-diones and 5-alkoxycarbonyl-2-benzazepine-1,3-diones<i>via</i>a mild alkaline cyclization
作者:Muriel Billamboz、Fabrice Bailly、Philippe Cotelle
DOI:10.1002/jhet.52
日期:2009.5
A series of 4-methoxycarbonylisoquinoline-1,3-diones was obtained from homophthalic acid in four steps. The key step was the quantitative and rapid alkaline cyclization of 2-methoxycarbonyl-2-(2-methoxycarbonylphenyl) acetamides. Homologation easily afforded in the same conditions 5-carboxy-2-benzazepine-1,3-dione. J. Heterocyclic Chem., 46, 392 (2009).
一系列4-甲氧基羰基异喹啉-1,3-二酮从 高邻苯二甲酸分为四个步骤。关键步骤是2-甲氧基羰基-2-(2-甲氧基羰基苯基)乙酰胺的定量和快速碱性环化。在相同条件下很容易获得同源性5-羧基-2-苯并ze庚因-1,3-二酮。J. Heterocyclic Chem。,46,392(2009)。