Facile One-Pot Synthesis of Monosubstituted 1-Aryl-1H-1,2,3-triazoles from Arylboronic Acids and Prop-2-ynoic Acid (=Propiolic Acid) or Calcium Acetylide (=Calcium Carbide) as Acetylene Source
作者:Qing Yang、Yubo Jiang、Chunxiang Kuang
DOI:10.1002/hlca.201100256
日期:2012.3
monosubstituted 1‐aryl‐1H‐1,2,3‐triazoles was achieved in a one‐pot reaction from arylboronic acids and prop‐2‐ynoic acid or calcium acetylide (=calcium carbide), respectively, as a source of acetylene, with yields ranging from moderate to excellent (Scheme 1, Table 2). The reaction conditions were successfully applied to arylboronic acids, including analogs with various functionalities. Unexpectedly
单取代的1-芳基-1 H 1,2,3-三唑的合成是通过一锅法反应分别由芳基硼酸和prop-2-壬酸或乙炔化钙(=碳化钙)作为来源乙炔,收率从中等到优异(方案1,表2)。反应条件已成功应用于芳基硼酸,包括具有各种功能的类似物。出乎意料的是,1,2,3-三唑部分促进了区域选择性加氢脱溴(方案2)。
A reliable one-pot synthesis of aryl azides from aryl amines using organotin azides as effective and recoverable reagents
作者:Leonela Godoy Prieto、Marcos J. Lo Fiego、Alicia B. Chopa、María T. Lockhart
DOI:10.1016/j.jorganchem.2016.11.037
日期:2017.2
procedure based on the one-pot diazotization-azidodediazoniation of aromatic amines is described. A wide range of aryl azides are obtained in moderate to high yields by using tributyltin azide as an effective and reusable azide source in the presence of p-toluenesulfonic acid at room temperature. The method was also successfully applied employing an insoluble polymer-supported organotin azide.
Making endo-cyclizations favorable again: a conceptually new synthetic approach to benzotriazoles <i>via</i> azide group directed lithiation/cyclization of 2-azidoaryl bromides
作者:Alexandra A. Ageshina、Gleb A. Chesnokov、Maxim A. Topchiy、Igor V. Alabugin、Mikhail S. Nechaev、Andrey F. Asachenko
DOI:10.1039/c9ob00615j
日期:——
in aryl azides containing several bromine atoms. Furthermore, (2-bromophenyl)diazomethane undergoes similar cyclization to give an indazole. Thus, cyclizations of aryl lithiums containing an ortho–X = Y = Z group emerge as a new general approach for the synthesis of aromatic heterocycles. DFT computations suggested that the observed endo-selectivity applies to the anioniccyclizations of other functionalities
尽管苯并三唑是重要的且无处不在,但目前仅有一种概念上的合成方法:将两个邻氨基与亲电氮原子桥连。在此,我们公开了新的可行的选择-将内获得2 azidoaryl lithiums -cyclization原位从2 azidoaryl溴化物。使用二十四个带有各种烷基,烷氧基,全氟烷基和卤素取代基的实例来说明反应的范围。我们发现叠氮化物基团的导向作用允许在含有几个溴原子的芳基叠氮化物中进行选择性的金属-卤素交换。此外,(2-溴苯基)重氮甲烷经历类似的环化以生成吲唑。因此,芳基锂的环化包含邻-X = Y = Z基团是合成芳族杂环的一种新的通用方法。DFT计算表明,观察到的内选择性适用于经历“ 1,1-加成”(即叠氮化物,重氮化合物和异腈)的其他官能团的阴离子环化反应。与此相反,与遵循“1,2-加成”图案(氰酸酯,硫氰酸酯,异氰酸酯,异硫氰酸酯,和腈)的杂原子官能团的环化反应倾向于外-cyclizat
Iron-catalyzed bromination of aryl azides by N-bromosuccinimide: Efficient method for the synthesis of brominated aryl azides
作者:Hui Jin、Zhen Dong Huang、Chun Xiang Kuang、Xiao Kun Wang
DOI:10.1016/j.cclet.2010.10.024
日期:2011.3
An efficient and mild protocol for bromination of aryl azides with N-bromosuccinimide (NBS) under FeCl3 catalysis in 1,2-dichloroethane was developed. It is proved to be an efficient method for obtaining brominated aryl azides.
Design, synthesis, and antimicrobial evaluation of novel 10-Undecenoic acid-based lipidic triazoles
作者:B. Gandhi、K. Greeshma、Durga Prasad Ruvulapalli、Shiva Shanker Kaki
DOI:10.1007/s00044-022-02940-9
日期:2022.9
designed and synthesized in the present study. 10-Undecenoic acid on treatment with propargyl bromide yielded the corresponding ester which was reacted with different aryl azides to obtain the novel triazoles. The synthesized compounds were characterized by NMR, IR, and massspectral data. The synthesized lipidic triazole compounds were studied for the antibacterial and antifungal activities against Ralstonia