An Efficient Lewis Acid Catalyzed Povarov Reaction for the One-Pot Stereocontrolled Synthesis of Polyfunctionalized Tetrahydroquinolines
作者:Cristina Cimarelli、Samuele Bordi、Pamela Piermattei、Maura Pellei、Fabio Del Bello、Enrico Marcantoni
DOI:10.1055/s-0036-1589104
日期:2017.12
is expanded to the one-pot synthesis of N-alkyltetrahydroquinolines through a very efficient iminium-Povarov approach. A deeper insight on the reaction system was provided by the study on the side reactions occurring in the reaction conditions and on the nature of the stereoselectivity. An easy and efficient synthetic methodology for the one-pot stereocontrolledsynthesis of tetrahydroquinolines through
Electrochemical oxidative [4 + 2] annulation of tertiary anilines and alkenes for the synthesis of tetrahydroquinolines
作者:Pengfei Huang、Pan Wang、Shengchun Wang、Shan Tang、Aiwen Lei
DOI:10.1039/c8gc02463d
日期:——
pharmaceutical and agrochemical industries. The oxidative [4 + 2] annulation reaction provides a powerful tool for the rapid construction of six-membered heterocycles. Herein, we report a metal- and external oxidant-free method for the uniform synthesis of tetrahydroquinolines through the electrochemical oxidative [4 + 2] annulation of tertiary anilines and alkenes. In this strategy, one partner loses only
Cobalt-catalyzed aerobic oxidative Povarov reaction of tertiary anilines with dihydrofuran for the synthesis of hexahydrofuroquinolines
作者:Congde Huo、Fengjuan Chen、Zhengjun Quan、Jie Dong、Yajun Wang
DOI:10.1016/j.tetlet.2016.10.031
日期:2016.11
A simple and efficient cobalt-catalyzed aerobic oxidative dehydrogenative Povarov reaction of tertiary anilines with dihydrofuran has been developed for the synthesis of hexahydrofuro[3,2-c]quinolines. The one-electron-oxidation involved reaction is performed under mild conditions and only requires simple cobalt salts as a catalyst and dioxygen as a terminal oxidant.
已开发出一种简单高效的叔苯胺钴催化的好氧氧化脱氢Povarov反应与二氢呋喃,用于合成六氢呋喃[3,2- c ]喹啉。涉及单电子氧化的反应在温和的条件下进行,只需要简单的钴盐作为催化剂,并用双氧作为末端氧化剂。
Cu+-based composite metal oxides enable the efficient [4+2] annulation reactions between tertiary anilines and tetrahydrofuran
作者:Weiyou Zhou、Jiayin Huang、Anwei Wang、Jia Cui、Jie Yao、Tao Hou、Shuliang Ji、Mingyang He、Zhonghua Sun
DOI:10.1016/j.mcat.2024.114011
日期:2024.4
heterogeneous catalytic system for the [4 + 2] annulation reactions between tertiary anilines and tetrahydrofuran has been developed based on CuCoFe layered double oxide in the study. Cu species was believed to play the crucial role in the catalytic transformation, and synergistic effect between Cu and CoFe species was observed in the reaction. Various tertiary anilines could be tolerated by the present
ONE-POT SYNTHESIS OF TETRAHYDROQUINOLINES CATALYZED BY Dy(OTf)<sub>3</sub>IN AQUEOUS SOLUTION
作者:Ruifang Chen、Changtao Qian
DOI:10.1081/scc-120005937
日期:2002.1
Various 4-substituted-1-methyltetrahydroquinolines are easily accessible from the one-pot condensation reaction of N-methylaniline with commercial formaldehyde solution and electron-rich alkenes in the presence of Dy(OTf)(3) (1 mol %) under mild conditions at ambient temperature and in the absence of any organic solvents.