TMSOTf-catalyzed synthesis of trisubstituted imidazoles using hexamethyldisilazane as a nitrogen source under neat and microwave irradiation conditions
作者:Kesatebrhan Haile Asressu、Chieh-Kai Chan、Cheng-Chung Wang
DOI:10.1039/d1ra05802a
日期:——
In the process of drug discovery and development, an efficient and expedient synthetic method for imidazole-based small molecules from commercially available and cheap starting materials has great significance. Herein, we developed a TMSOTf-catalyzed synthesis of trisubstituted imidazoles through the reaction of 1,2-diketones and aldehydes using hexamethyldisilazane as a nitrogen source under microwave
在药物发现和开发过程中,一种高效便捷的以市售廉价起始原料合成咪唑基小分子的方法具有重要意义。在此,我们利用六甲基二硅氮烷作为氮源,在微波加热和无溶剂条件下,通过 1,2-二酮和醛的反应开发了 TMSOTf 催化合成三取代咪唑。使用 X 射线单晶衍射分析证实了代表性三取代咪唑的化学结构。这种合成方法有几个优点,包括温和的路易斯酸的参与,不含金属和添加剂,底物范围广,收率好至极好,反应时间短。此外,
A Convenient Method for the Preparation of 2,4,5-triaryl Imidazoles Using Barium Chloride Dispersed on Silica Gel Nanoparticles (BaCl2-nano SiO2) as Heterogeneous Reusable Catalyst
A simple and eco-friendly procedure for the synthesis of 2,4,5-triaryl imidazoles by using Barium chloride
dispersed on silica gel nanoparticles (BaCl2-nano SiO2) as heterogeneous reusable catalyst in high yield under thermal
conditions has been described.
Room temperature ionic liquid promoted improved and rapid synthesis of highly functionalized imidazole and evaluation of their inhibitory activity against human cancer cells
作者:Chetan K. Jadhav、Amol S. Nipate、Asha V. Chate、Pratiksha M. Kamble、Ganesh A. Kadam、Vidya S. Dofe、Vijay M. Khedkar、Charansingh H. Gill
DOI:10.1002/jccs.202000468
日期:——
advantage of this protocol for gram-scale synthesis adds to its practical applicability. Selected synthesized tetra- and trisubstitutedimidazole scaffolds were screened for their in vitro antiproliferative properties against the human cancer cell lines EC-109, MCF-7, HGC-27, and PC-3. Compounds 4m, 5e, and 5v showed potent cytotoxic activity against the human breast cancer cell line PC-3, MCF-7, and HGC-27
Verfahren zur Herstellung von p-Nitrophenyl-imidazolen
申请人:BASF Aktiengesellschaft
公开号:EP0365907A1
公开(公告)日:1990-05-02
Verfahren zur Herstellung von in 2- und/oder 4- und/oder 5-Position durch p-Nitrophenyl und gegebenenfalls zusätzlich substituierten Imidazolen durch Umsetzung von in 2- und/oder 4- und/oder 5-Position durch Phenyl und gegebenenfalls zusätzlich substituierten Imidazolen mit Gemischen von Schwefelsäure und Salpetersäure, indem man die Reaktion in Gegenwart von Harnstoff durchführt.