作者:John Cornforth、Du Ming-hui
DOI:10.1039/p19900001463
日期:——
followed by cyclization, 6,7-dimethylindolizine-5,8-dione was obtained. The process failed with maleic anhydride. Pyrrolo[1,2-b]isoquinoline-5,10-dione could be dinitrated in the pyrrolo ring (with some oxidation to isoquinoline-1,3,4-trione), reduced to 10-hydroxy-3,5-dihydropyrrolo[1,2-b]isoquinolin-5-one by zinc and acetic acid, and hydrogenated over palladium on carbon to 10-hydroxy-1,2,3,5-tetrahydropyrrolo[l
由邻苯二甲酸酐和吡咯基卤化镁合成吡咯并异喹啉二酮已得到改进。通常优选通过新的1-(2-羧基苯甲酰基)吡咯的环化来进行新的合成。由吡咯基溴化镁和二甲基马来酸酐,然后环化,得到6,7-二甲基吲哚嗪-5,8-二酮。用马来酸酐使该方法失败。吡咯并[1,2 - b ]异喹啉-5,10-二酮可在吡咯并环中被硝化(并氧化成异喹啉-1,3,4-三酮),还原为10-羟基-3,5-二氢吡咯并[ 1,2 - b ]异喹啉-5-酮由锌和乙酸制得,并在钯/碳上氢化成10-羟基-1,2,3,5-四氢吡咯并[l,2- b] isoquinolin-5-one。二氢衍生物在空气中转化为二酮。