Copper-Catalyzed Deoxygenative C-2 Amination of Quinoline <i>N</i>
-Oxides
作者:Zhihui Wang、Man-Yi Han、Pinhua Li、Lei Wang
DOI:10.1002/ejoc.201800963
日期:2018.11.25
An unprecedented reaction between quinolineN‐oxides with O‐benzoylhydroxylamines was developed by using CuCl as catalyst, generating deoxygenative products of 2‐aminoquinolines in good yields. 1,2‐Dichloroethane (DCE) as solvent also served as reducing agent to cleave the N–O bond with no additional reductant needed in the reaction.
<i>H</i>-phosphonate mediated sulfonylation of 2-substituted quinoline <i>N</i>-oxides: One-pot strategy for the synthesis of 3/4-sulfonylquinoline derivatives
ABSTRACT A series of biologically important 3/4-sulfonylquinoline derivatives was synthesized starting from easily available sodium benzenesulfinates, diethyl H-phosphonate and 2-substituted quinoline N-oxides in one-pot under metal-free conditions. H-phosphonate plays a decisive role in activating the C3-H, C4-H bonds of the 2-substituted quinoline N-oxides. The isolated 3/4-sulfonylquinolines were characterized
metal-free approach for the synthesis of 3-aryl-2-substituted quinolines and 4-arylacridines has been developed via the 1,3-dipolar cycloaddition reactions of arynes with N-oxides. Reactions of various 2-substitued quinolineN-oxides with ortho-(trimethylsilyl)aryltriflates in the presence of KF gave 3-(2-hydroxyaryl)quinoline derivatives in good yields. Acridine N-oxides also reacted with arynes to
Copper/manganese oxide catalyzed regioselective amination of quinoline N-oxides: An example of synergistic cooperative catalysis
作者:Tapan Sahoo、Dinesh Thakur、Asit Baran Panda、Subhash Chandra Ghosh
DOI:10.1016/j.tetlet.2021.153415
日期:2021.10
Copper-Catalyzed Intermolecular Dehydrogenative Amidation/Amination of Quinoline <i>N</i>-Oxides with Lactams/Cyclamines
作者:Gang Li、Chunqi Jia、Kai Sun
DOI:10.1021/ol402324v
日期:2013.10.18
C-H, N-H dehydrogenative coupling of quinoline N-oxides with lactams/cyclamines has been achieved in the presence of the Cu(OAc)(2) catalyst to give good to excellent yields. This study provides a new strategy for the construction of a 2-aminoquinoline skeleton via direct functionalization of aryl C-H bonds.