Au(I)/Ag(I)-Catalyzed Cascade Approach for the Synthesis of Benzo[4,5]imidazo[1,2-<i>c</i>]pyrrolo[1,2-<i>a</i>]quinazolinones
作者:Xun Ji、Yu Zhou、Jinfang Wang、Linxiang Zhao、Hualiang Jiang、Hong Liu
DOI:10.1021/jo400228g
日期:2013.5.3
Au(I)/Ag(I)-catalyzed cascade method has been developed for one-pot synthesis of the complex polycyclic heterocycles benzo[4,5]imidazo[1,2-c]pyrrolo[1,2-a]quinazolinone derivatives through treatment of the substituted 2-(1H-benzo[d]imidazol-2-yl)anilines with 4-pentynoic acid or 5-hexynoic acid. The strategy features a Au(I)/Ag(I)-catalyzed one-pot cascadeprocess involving the formation of three new C–N bonds in
已开发出一种高效且简便的Au(I)/ Ag(I)催化级联方法,用于一锅合成复杂的多环杂环苯并[4,5]咪唑并[1,2- c ]吡咯并[1,2-通过用4-戊酸或5-己酸处理取代的2-(1H-苯并[ d ]咪唑-2-基)苯胺来制备α ]喹唑啉酮衍生物。该策略以Au(I)/ Ag(I)催化的一锅级联过程为特色,该过程涉及以高产率形成三个新的C–N键,并且具有广泛的底物范围。
A Consecutive Condensation, Cyclization, and Dehydration for the Synthesis of Benzimidazopyrroloquinazolines Catalyzed by TsOH
作者:Yi-Ping Wang、Xue-Rong Ou、Yue Wang、Jian-Quan Liu、Xiang-Shan Wang
DOI:10.1002/jhet.3293
日期:2018.10
A consecutive condensation, cyclization, and dehydration of 2‐(1H‐benzo[d]imidazol‐2‐yl) anilines and ketonic acid in toluene catalyzed by TsOH gave a series of benzo[4,5]imidazo [1,2‐c]pyrrolo[1,2‐a]quinazolin‐3(2H)‐one derivatives in good to high yields. The structure of 3e was further confirmed unambiguously by X‐ray diffraction analysis.
TsOH催化甲苯中的2-(1 H-苯并[ d ]咪唑-2-基)苯胺和酮酸的连续缩合,环化和脱水反应,得到一系列苯并[4,5]咪唑[1,2- ç ]吡咯并[1,2一]喹唑啉-3(2 ħ) -酮衍生物以良好至高产率。X射线衍射分析进一步明确地证实了3e的结构。