polysubstituted quinolinesfrom o-vinyl anilines and aldehydes. The reaction proceeds in a cascade manner through condensation, electrocyclization and dehydrogenation, and gives access to a wide range of quinolines with alkyl and/or aryl substituents as demonstrated with 40 examples. The metal-free catalytic procedure allows a heterogeneous protocol for the synthesis of various polysubstituted quinolines. The
A simple and efficient way to construct quinoline derivatives using enamides and imines in metal free condition.
使用金属无条件下,使用烯胺和亚胺构建喹啉衍生物的简单高效方法。
Manganese(<scp>ii</scp>)-catalysed dehydrogenative annulation involving C–C bond formation: highly regioselective synthesis of quinolines
作者:Chengniu Wang、Jinfei Yang、Xiao Meng、Yufeng Sun、Xuyan Man、Jinxia Li、Fei Sun
DOI:10.1039/c9dt00647h
日期:——
An inexpensive nontoxic manganese(ii)-catalysed dehydrogenative annulation was developed for C–C bond formation.
一种廉价无毒的锰(II)催化脱氢缩合反应被开发用于C-C键的形成。
Iron(III)-Catalyzed and Air-Mediated Tandem Reaction of Aldehydes, Alkynes and Amines: An Efficient Approach to Substituted Quinolines
作者:Ke Cao、Fu-Min Zhang、Yong-Qiang Tu、Xiao-Tao Zhuo、Chun-An Fan
DOI:10.1002/chem.200900875
日期:2009.6.22
Economic and practical advantages are offered by the iron(III)‐catalyzed and air‐mediated tandem coupling/hydroarylation/dehydrogenation of simple readily available aldehydes, alkynes, and amines for the synthesis of 2, 4‐disubstituted quinolines (see scheme).
Iron-Catalyzed Oxidative Cyclization of 2-Amino Styrenes with Alcohols and Methyl Arenes for the Synthesis of Polysubstituted Quinolines
作者:Seok Beom Lee、Simin Chun、Seung Hyun Choi、Junhwa Hong、Dong-Chan Oh、Suckchang Hong
DOI:10.1021/acs.joc.3c00095
日期:2023.7.7
the iron-catalyzed oxidative cyclization of alcohol/methyl arene with 2-amino styrene to synthesize polysubstituted quinoline. Low-oxidation level substrates such as alcohols and methyl arenes are converted to aldehydes in the presence of an iron catalyst and di-t-butyl peroxide. Then, the quinoline scaffold is synthesized through imine condensation/radical cyclization/oxidative aromatization. Our