1,3(2H,4H)-Dioxoisoquinoline-4-carboxamides, nuclear unsubstituted and substituted, are prepared by reacting the appropriate homophthalimide with potassium cyanate. Secondary carboxamides are prepared by reacting homophthalimide with appropriate isocyanates, and tertiary carboxamides are prepared by aminolysis of 4-carbalkoxy compounds, which are in turn prepared by alcoholysis of the corresponding 4-carboxanilides. Corresponding 5,6,7,8-tetrahydro compounds are similarly prepared. The various 2-substituted homophthalimides are prepared by reacting homophthalic acid with appropriate amine. The 4-carboxamides are anti-inflammatory agents.
1,3(2H,4H)-二氧化
异喹啉-4-羧酰胺,核未取代和取代的,通过将适当的同间苯二
酰亚胺与
氰酸钾反应制备。次级羧酰胺是通过将同间苯二
酰亚胺与适当的
异氰酸酯反应制备的,而三级羧酰胺是通过对4-羧烷氧基化合物进行
氨解制备的,这些化合物又是通过相应的4-羧基
苯胺的醇解制备的。相应的5,6,7,8-四氢化合物同样制备。各种2-取代的同间苯二
酰亚胺是通过将同
间苯二甲酸与适当的胺反应制备的。4-羧酰胺是抗炎药物。