Convenient syntheses of dihydropyrrolo[2′,1′:3,4]pyrazino- and dihydropyrrolo[2′,1′:3,4][1,4]diazepino-[2,1-a]isoindolones
摘要:
Dihydropyrrolo[2'.1':3,4]pyrazino[2.1-a]isoindolones 10a-10c were obtained in 76-81% yields by the reaction of 2-(1H-pyrrol-l-yl)ethylamine 8 with 2-formylbenzoic acids 9a, 9b or 22-acetylbenzoic acid 9c via N-acyliminium cation aromatic cyclizations. Similarly, dihydropyrrolo[2',1':3,4][1,4]diazepino[2.1-a]isoindolones 12a, 12b were prepared in one-pot reactions front 3-(1H-pyrrol-l-yl)propylamine 11 and 2-formylbenzoic acids 9a, 9b. (C) 2002 Elsevier Science Ltd. All rights reserved.
Convenient syntheses of dihydropyrrolo[2′,1′:3,4]pyrazino- and dihydropyrrolo[2′,1′:3,4][1,4]diazepino-[2,1-a]isoindolones
作者:Alan R. Katritzky、Hai-Ying He、Rong Jiang
DOI:10.1016/s0040-4039(02)00350-7
日期:2002.4
Dihydropyrrolo[2'.1':3,4]pyrazino[2.1-a]isoindolones 10a-10c were obtained in 76-81% yields by the reaction of 2-(1H-pyrrol-l-yl)ethylamine 8 with 2-formylbenzoic acids 9a, 9b or 22-acetylbenzoic acid 9c via N-acyliminium cation aromatic cyclizations. Similarly, dihydropyrrolo[2',1':3,4][1,4]diazepino[2.1-a]isoindolones 12a, 12b were prepared in one-pot reactions front 3-(1H-pyrrol-l-yl)propylamine 11 and 2-formylbenzoic acids 9a, 9b. (C) 2002 Elsevier Science Ltd. All rights reserved.