Heterocyclic derivatives as modulators of ion channels
申请人:Martinborough Esther
公开号:US20080027067A1
公开(公告)日:2008-01-31
The present invention relates to heterocyclic derivatives useful as inhibitors of ion channels. The invention also provides pharmaceutically acceptable compositions comprising the compounds of the invention and methods of using the compositions in the treatment of various disorders.
Synthesis of Halogenated Anilines by Treatment of <i>N</i>,<i>N</i>-Dialkylaniline <i>N</i>-Oxides with Thionyl Halides
作者:Hayley Reed、Tyler R. Paul、William J. Chain
DOI:10.1021/acs.joc.8b01590
日期:2018.9.21
The special reactivity of N,N-dialkylaniline N-oxides allows practical and convenient access to electron-rich aryl halides. A complementary pair of reaction protocols allow for the selective para-bromination or ortho-chlorination of N,N-dialkylanilines in up to 69% isolated yield. The generation of a diverse array of halogenated anilines is made possible by a temporary oxidation level increase of N
N,N-二烷基苯胺N-氧化物的特殊反应性使得可以方便实用地获得富含电子的芳基卤化物。一对互补的反应协议允许用于选择性对-bromination或邻位的-chlorination N,N- -dialkylanilines在高达69%的分离收率。通过将N,N-二烷基苯胺暂时氧化为相应的N,N-二烷基苯胺N-氧化物并去除生成的弱N – O ,可以生成各种卤化苯胺 通过在低温下用亚硫酰溴或亚硫酰氯处理可实现键合。
Utilization of renewable formic acid from lignocellulosic biomass for the selective hydrogenation and/or N‐methylation
作者:Chao‐Zheng Zhou、Yu‐Rou Zhao、Fang‐Fang Tan、Yan‐Jun Guo、Yang Li
DOI:10.1002/cctc.202101099
日期:2021.11.22
Lignocellulosic biomass is one of the most abundant renewable sources in nature. Herein, we have developed the utilization of renewable formicacidfrom lignocellulosic biomass as a hydrogen source and a carbon source for the selective hydrogenation and further N-methylation of various quinolines and the derivatives, various indoles under mild conditions in high efficiencies. N-methylation of various
Radical-mediated direct C–H amination of arenes with secondary amines
作者:Sebastian C. Cosgrove、John M. C. Plane、Stephen P. Marsden
DOI:10.1039/c8sc01747f
日期:——
wide range of effect chemicals, are accessed by intramolecular amination of aromatic C–H bonds employing UV photolysis of N-chloroamines. The reactions show good functional group tolerance and allow access to a range of fused and bridged polycyclic structures. The homogeneous reaction conditions allow for the one-pot conversion of secondary amines to their arylated derivatives. Experimental and theoretical
N-methylation of quinolines with CO2 and H2 catalyzed by Ru-triphos complexes
作者:Zhenhong He、Huizhen Liu、Qingli Qian、Lu Lu、Weiwei Guo、Lujun Zhang、Buxing Han
DOI:10.1007/s11426-017-9024-8
日期:2017.7
N-methyl-tetrahydroquinolines (MTHQs) are a kind of very useful chemicals, which can be obtained from N-methylation of amines. However, the methylation of quinolines which is a kind of highly unsaturated nitrogen-containing heterocyclic aromatic compounds has not been reported. In this work, we report the first work for the synthesis of MTHQs by methylation of quinolines using CO2 and H2. It was found