Transition-Metal-Free Cross-Coupling Reactions in Dynamic Thin Films To Access Pyrimidine and Quinoxaline Analogues
作者:Louisa A. Ho、Colin L. Raston、Keith A. Stubbs
DOI:10.1002/ejoc.201600830
日期:2016.12
The vortex fluidic device (VFD) is effective in modulating the synthesis of pyrimidine and quinoxaline-based compounds at room temperature and in high yield. The formation of the C–N bond occurs in the absence of a transition-metal catalyst, which avoids the contamination of the products with trace amounts of a transition metal. The systematic investigation of the operating parameters for the microfluidic
Amination of Heteroaryl Chlorides: Palladium Catalysis or S<sub>N</sub>Ar in Green Solvents?
作者:Katie Walsh、Helen F. Sneddon、Christopher J. Moody
DOI:10.1002/cssc.201300239
日期:2013.8
reaction of heteroarylchlorides in the pyrimidine, pyrazine and quinazoline series with amines in water in the presence of KF results in a facile SNAr reaction and N‐arylation. The reaction is less satisfactory with pyridines unless an additional electron‐withdrawing group is present. The results showed that the transition‐metal‐free SNAr reaction not only compares favourably to palladium‐catalysed
嘧啶、吡嗪和喹唑啉系列中的杂芳基氯化物与水中的胺在 KF 存在下发生反应,导致容易的 S N Ar 反应和N芳基化。除非存在额外的吸电子基团,否则吡啶的反应不太令人满意。结果表明,无过渡金属的 S N Ar 反应不仅优于钯催化的偶联反应,而且在碱和溶剂方面也可以在环境可接受的(“绿色”)条件下进行。
Nitrogen-containing heterocyclic compounds and medicinal use thereof
申请人:Habashita Hiromu
公开号:US20070167459A1
公开(公告)日:2007-07-19
The compound represented by formulae (I) and (II), the salt thereof, the N-oxide thereof or the solvate thereof, or the prodrug thereof and the pharmaceutical composition comprising thereof have a CXCR4-regulating effect, and they are effective in treatment and prevention of various inflammatory disease, various allergic disease, acquired immunodeficiency syndrome infection with human immunodeficiency virus, or agents for regeneration therapy.
(wherein ring A represents a nitrogen-containing heterocyclic group which may have a substituent(s); ring B represents a homocyclic group which may have a substituent(s) or a heterocyclic group which may have a substituent(s); and Y represents a hydrocarbon group which may have a substituent(s), a heterocyclic group which may have a substituent(s), an amino group which may be protected, a hydroxyl group which may be protected or a mercapto group which may be protected; T represents ring A or an amino group which may be protected.)
Ambient Temperature Metal‐Free Thiomethylation of Chloroheteroarenes and Chloropurines
作者:Manisha Patel、Ra K Vora、Yogesh S Sanghvi、anant kapdi
DOI:10.1002/asia.202400114
日期:——
Herein, we report an in-situ mild and metal-free protocol for thiomethylation of heteroarenes in high yields. The thiomethylation of various chloropurines, nucleosides, and chloroheteroarenes has been accomplished offering easy access to agrochemicals and synthetic molecules useful for drug discovery.