The photobromination of CHbonds by using molecular bromine was reinvestigated under microfluidic conditions. The continuous‐flow method suppressed the production of dibrominated compounds and effectively produced the desired monobrominated products with high selectivity. Rapid bromination of benzylic substrates containing a photoaffinity azide group was achieved without any decomposition.
In vitro antiplasmodial efficacy of synthetic coumarin-triazole analogs
作者:Neesha Yadav、Drishti Agarwal、Satyanand Kumar、A.K. Dixit、Rinkoo D. Gupta、Satish K. Awasthi
DOI:10.1016/j.ejmech.2018.01.017
日期:2018.2
Twenty two diverse coumarin-triazole derivatives were synthesized by alkylation of 7-hydroxy-4-methyl-coumarin followed by click chemistry at 7-position. These compounds were evaluated for their in vitro antiplasmodial activity against chloroquine sensitive strain of Plasmodium falciparum (3D7). Compound 9 (7-[1-(2, 4-dimethoxy-phenyl)-1H- [1–3] triazol-4-ylmethoxy]-4-methyl-chromen-2-one) was found
Synthesis and Antitumor Activity of 1-Substituted 1,2,3-Triazole-Mollugin Derivatives
作者:Han Luo、Yong-Feng Lv、Hong Zhang、Jiang-Miao Hu、Hong-Mei Li、Shou-Jin Liu
DOI:10.3390/molecules26113249
日期:——
A new series of mollugin-1,2,3-triazole derivatives were synthesized using a copper(I)-catalyzed Huisgen 1,3-dipolar cycloaddition reaction of corresponding O-propargylated mollugin with aryl azides. All the compounds were evaluated for their cytotoxicity on five human cancer cell lines (HL-60, A549, SMMC-7721, SW480, and MCF-7) using MTS assays. Among the synthesized series, most of them showed cytotoxicity
Intramolecular Carbonylative C-H Functionalization of 1,2,3- Triazoles for the Synthesis of Triazolo[1,5-<i>a</i>]indolones
作者:Cedrick Veryser、Gert Steurs、Luc Van Meervelt、Wim M. De Borggraeve
DOI:10.1002/adsc.201601388
日期:2017.4.17
the synthesis of this new heterocyclic scaffold is an intramolecular cyclization via an unprecedented carbonylativeC–H functionalization of 1‐(2‐bromoaryl)‐1,2,3‐triazoles. Isotopic labelling of the carbonyl carbon atom is possible using near stoichiometric amounts of 13CO. Additionally, an alternative pathway via carbonylative Sonogashira coupling followed by a two‐step, one‐pot azidation/cycloaddition
这项研究提出了4 H- [1,2,3]三唑[1,5 - a ]吲哚-4-酮的合成。合成这种新型杂环骨架的关键步骤是通过空前的1-(2-溴芳基)-1,2,3-三唑的羰基化CH功能将分子内环化。可以使用接近化学计量的13 CO进行羰基碳原子的同位素标记。此外,还研究了通过羰基Sonogashira偶联然后进行两步单罐叠氮化/环加成反应的替代途径,从而产生了相同的骨架。
Synthesis of β-azolyl- and β-azolylcarbonylenamines and their reactions with aromatic azides
作者:Yuri M. Shafran、Tetyana V. Beryozkina、Ilya V. Efimov、Vasiliy A. Bakulev
DOI:10.1007/s10593-019-02525-2
日期:2019.8
Organocatalytic reactions of 4-acetyl-1,2,3-triazoles with aryl azides were used to obtain bis-1,2,3-triazoles containing directly linked ring systems. The reactions of 4-acetylazoles with DMF–DMA led to the formation of enamines. It was found that the acetyl and methyl groups in 4-acetyl-5-methyl-1,2,3-thiadiazole competed for the role of reactive site. The obtained enamines reacted with aryl azides, forming