Copper(II)-Catalyzed Domino Synthesis of Indolo[3,2-<i>c</i>]quinolinones via Selective Carbonyl Migration
作者:Dhanarajan Arunprasath、Govindasamy Sekar
DOI:10.1021/acs.orglett.8b03557
日期:2019.2.15
A Cu(II)-catalyzed dominoprocess involving the carbene N–H insertion, intramolecular aldol-type trapping and unprecedented ring-expansion of oxindole core through C3-selective 1,2-carbonyl migration is described for the synthesis of indolo[3,2-c]quinolinones. This tetracyclic core, having an all-carbon quaternary center, was efficiently synthesized in high yields from amines and 3-diazo-oxindoles
描述了吲哚合成的Cu(II)催化的多米诺过程,该过程涉及卡宾N–H插入,分子内醛醇型捕获和通过C3选择性1,2-羰基迁移引起的羟吲哚核的空前扩环[3, 2- c ]喹啉酮。该四环核具有全碳的季中心,可以高效率地由胺和3-重氮-氧吲哚合成。机理研究表明,该反应是通过逐步途径进行的,并且路易斯酸铜与原位形成的TfOH痕迹的隐含布朗斯台德酸度之间具有协同催化作用。
Copper(II)-Catalyzed Synthesis of Pyrrolo[3,4-<i>b</i>]quinolinediones from <i>o</i>-Amino Carbonyl Compounds and Maleimides
作者:Dhananjay S. Nipate、Krishnan Rangan、Anil Kumar
DOI:10.1021/acs.orglett.3c00240
日期:2023.3.3
A copper(II)-catalyzed cascade synthesis of 1H-pyrrolo[3,4-b]quinoline-1,3(2H)-diones has been achieved from readily available o-amino carbonyl compounds and maleimides. This one-potcascade strategy involves a copper-catalyzed aza-Michael addition followed by condensation and oxidation to deliver the target molecules. The protocol features a broad substrate scope and excellent functional group tolerance
铜 (II) 催化的 1 H-吡咯并 [3,4- b ] 喹啉-1,3(2 H )-二酮的级联合成已经从容易获得的邻氨基羰基化合物和马来酰亚胺中实现。这种单锅级联策略涉及铜催化的氮杂-迈克尔加成,然后进行缩合和氧化以传递目标分子。该协议具有广泛的底物范围和出色的官能团耐受性,并提供中等至良好 (44–88%) 产量的产品。
Intramolecular Cyclization of 2′-Aminochalcones by Halomethyleniminium Salts Derived from BTC/DMF
作者:Zhen-Hua Li、Cun Zheng、Ren-Er Chen、Weike Su
DOI:10.1080/00304940902802156
日期:2009.5.12
Cu2O-catalyzed cascade phosphinylation/cyclization of 2′-aminochalcones for the synthesis of hemi-indigo derivatives
作者:Xian Liu、Liqiang Hao、Yangyang Wang、Xiao Yu、Zhaoziyuan Yang、Yiping Liu、Yafei Ji
DOI:10.1039/d4ob00594e
日期:——
An efficient Cu2O catalysis of 2′-aminochalcones and diphenylphosphine oxides leading to a series of hemi-indigo derivatives is presented.