Chiral phosphoric acid catalyzed oxidative kinetic resolution of cyclic secondary amine derivatives including tetrahydroquinolines by hydrogen transfer to imines
Synergy of anodic oxidation and cathodic reduction leads to electrochemical deoxygenative C2 arylation of quinoline <i>N</i>-oxides
作者:Yong Yuan、Minbao Jiang、Tao Wang、Yunkui Xiong、Jun Li、Huijiao Guo、Aiwen Lei
DOI:10.1039/c9cc05841a
日期:——
The first example of electrochemical deoxygenative C2 arylation of quinoline N-oxides using sulfonyl hydrazines was demonstrated in this work. By employing both anodicoxidation and cathodicreduction, a variety of 2-arylquinolines were synthesized under metal catalyst-, exogenous-oxidant-, and exogenous-reductant-free conditions.
Silver-Catalyzed Oxidative Coupling of Aniline and Ene Carbonyl/Acetylenic Carbonyl Compounds: An Efficient Route for the Synthesis of Quinolines
作者:Xu Zhang、Xuefeng Xu
DOI:10.1002/asia.201402742
日期:2014.11
An efficient silver‐mediated coupling of aniline with ene carbonyl/acetylenic carbonyl compounds for the synthesis of quinolines is reported. The transformation is effective for a broad range of substrates, thus enabling the expansion of substituent architectures on the heterocyclic framework. The electronic properties of the substituents on the amine have been investigated. It was found that molecules
Coupling Radical Homoallylic Expansions with C–C Fragmentations for the Synthesis of Heteroaromatics: Quinolines from Reactions of <i>o</i>-Alkenylarylisonitriles with Aryl, Alkyl, and Perfluoroalkyl Radicals
作者:Christopher J. Evoniuk、Gabriel dos Passos Gomes、Michelle Ly、Frankie D. White、Igor V. Alabugin
DOI:10.1021/acs.joc.7b00262
日期:2017.4.21
radicals to isonitriles can be harnessed for initiating reaction cascades designed to overcome the stereoelectronic restrictions on homoallylic ring expansion in alkyne reactions and to develop a new general route for the preparation of N-heteroaromatics. This method utilizes alkenes as synthetic equivalents of alkynes by coupling homoallylic ring expansion to yield the formal “6-endo” products with aromatization
Coupling cyclizations with fragmentations for the preparation of heteroaromatics: quinolines from o-alkenyl arylisocyanides and boronic acids
作者:Christopher J. Evoniuk、Michelle Ly、Igor V. Alabugin
DOI:10.1039/c5cc04391c
日期:——
Stereoelectronic restrictions on homoallylic ring expansion in alkyne cascades can be overcome by using alkenes as synthetic equivalents of alkynes in reaction cascades that are terminated by C-C bond fragmentation....
Sustainable synthesis of quinolines (pyridines) catalyzed by a cheap metal Mn(I)‐NN complex catalyst
作者:Huining Chai、Weiqiang Tan、Yuanyuan Lu、Guangyao Zhang、Jiping Ma
DOI:10.1002/aoc.5685
日期:2020.8
example of a bidentate phosphine‐free manganese(I)‐NN complex catalyst for the synthesis of quinolines (pyridines) through acceptorless dehydrogenative condensation of various secondary alcohols with amino alcohols. The coupling reactions occurred at 3 mol% catalyst loading and 110°C, and tolerated diverse functional groups. Moderate to excellent yields ranging from 45% to 89% were achieved after 12