已经报道了用 BrCF 2 CO 2 Et 或 BrCF 2 CONEt 2对吡咯并[1,2- a ]喹喔啉进行有效的铜催化直接 C1-H 二氟甲基化,提供了一系列二氟甲基化吡咯并[1,2- a ]喹喔啉产量普遍良好。该方法具有与取代基的良好相容性、广泛的底物范围和克级合成。还检查了产品的进一步转化。
KI/TBHP-promoted [3 + 2] cycloaddition of pyrrolo[1,2-<i>a</i>]quinoxalines and <i>N</i>-arylsulfonylhydrazones
作者:Zhen Yang、Jing He、Yueting Wei、Weiwei Li、Ping Liu
DOI:10.1039/d0ob00494d
日期:——
An efficient KI/TBHP-promoted [3 + 2] cycloaddition of pyrrolo[1,2-a]quinoxalines and N-tosylhydrazones is described. A series of diverse fused [1,2,4]triazolo[3,4-c]quinoxalines was obtained in moderate to good yields with wide functional group tolerance. Importantly, this reaction can be performed on a gram scale, even in a one-pot fashion. In addition, further transformations of the products were
Efficient Copper-Catalyzed Annulation of 2-Formylazoles with 2-Haloanilines for the Synthesis of Pyrrole- and Imidazole-Fused Quinoxalines
作者:Zihao Li、Nannan Yan、Jianwei Xie、Ping Liu、Jie Zhang、Bin Dai
DOI:10.1002/cjoc.201500115
日期:2015.5
Promoted by CuI/2‐hydroxybenzohydrazide catalytic system, a variety of pyrrole‐ and imidazole‐fused quinoxalines have been efficiently one‐pot synthesized from pyrrole‐/imidazole‐2‐carboxaldehyde and 2‐haloanilines in moderate to excellent yields.
Copper-promoted C1−H amination of pyrrolo[1,2-a]quinoxaline with N‑fluorobenzenesulfonimide
作者:Di Hao、Zhen Yang、Yali Liu、Yang Li、Yan Liu、Ping Liu
DOI:10.1016/j.molstruc.2022.133636
日期:2022.11
A copper-promoted direct C1-amination of pyrrolo[1,2-a]quinoxalines with N-fluorobenzenesulfonimide (NFSI) has been achieved. A series of C1-aminated pyrrolo[1,2-a]quinoxalines were obtained with broad substrate scope and good functional group tolerance. Gram-scale synthesis and further derivation of this aminated product were also investigated. Mechanism studies suggest that this reaction probably
已经实现了铜促进的吡咯并[1,2- a ]喹喔啉与N-氟苯磺酰亚胺 (NFSI)的直接 C1 胺化。得到了一系列底物范围广、官能团耐受性好的C1-胺化吡咯并[1,2- a ]喹喔啉。还研究了该胺化产物的革兰氏规模合成和进一步衍生。机理研究表明,这种反应可能经历了一个自由基过程。
Copper-Catalyzed Annulation of 2-Formylazoles with <i>o</i>-Aminoiodoarenes
作者:Jonathan T. Reeves、Daniel R. Fandrick、Zhulin Tan、Jinhua J. Song、Heewon Lee、Nathan K. Yee、Chris H. Senanayake
DOI:10.1021/jo9025644
日期:2010.2.5
In the presence of catalytic CuI and sparteine, 2-formyl-pyrroles can be annulated with o-aminoiodoarenes to give Substituted pyrrolo[1,2-a]quinoxalines and related heterocycles. The reaction also works for annulation of 2-formylindoles, 2-formylimidazole, 2-formylbenzimidazole, and a 3-formylpyrazole.