A dicationic, podand-like, ionic liquid water system accelerated copper-catalyzed azide-alkyne click reaction
摘要:
In this work, an effective, task specific, dicationic, podand-like ionic liquid was synthesized and applied to improve the capability features of click reaction. Moreover, to broaden the scope and decreasing the serious limitations of preparation methods of organic azides, a simple green procedure for the preparation of alkyl azides, the fundamental starting materials in click reactions, from alcohols under solvent-free conditions and microwave irradiation has been reported, for the first time. (C) 2014 Mohammad Javaherian. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.
Copper(I)-catalyzed tandem reaction: synthesis of 1,4-disubstituted 1,2,3-triazoles from alkyl diacyl peroxides, azidotrimethylsilane, and alkynes
作者:Muhammad Israr、Changqing Ye、Munira Taj Muhammad、Yajun Li、Hongli Bao
DOI:10.3762/bjoc.14.270
日期:——
A copper-catalyzed azide-alkyne cycloaddition (CuAAC) reaction for the synthesis of 1,4-disubstituted 1,2,3-triazolesfrom alkyl diacyl peroxides, azidotrimethylsilane, and terminalalkynes is reported. The alkyl carboxylic acids is for the first time being used as the alkyl azide precursors in the form of alkyl diacyl peroxides. This method avoids the necessity to handle organic azides, as they are
A Highly Efficient Single-Chain Metal–Organic Nanoparticle Catalyst for Alkyne–Azide “Click” Reactions in Water and in Cells
作者:Yugang Bai、Xinxin Feng、Hang Xing、Yanhua Xu、Boo Kyung Kim、Noman Baig、Tianhui Zhou、Andrew A. Gewirth、Yi Lu、Eric Oldfield、Steven C. Zimmerman
DOI:10.1021/jacs.6b04477
日期:2016.9.7
metal-organic nanoparticles (MONPs) are readily synthesized via Cu(II)-mediated intramolecular cross-linking of aspartate-containing polyolefins in water. In situ reduction with sodium ascorbate yields Cu(I)-containing MONPs that serve as highly efficient supramolecular catalysts for alkyne-azide "click chemistry" reactions, yielding the desired 1,4-adducts at low parts per million catalyst levels. The
Efficient and Rapid Regioselective One-Pot Synthesis of 1,4-Disubstituted 1,2,3-Triazoles from In Situ Generated Potassium Arylethynyltrifluoroborates through Sonogashira Reaction
作者:Jung Ho Song、Pilju Choi、Seung Eon Lee、Kyu Hyuk Jeong、Taejung Kim、Ki Sung Kang、Yong Soo Choi、Jungyeob Ham
DOI:10.1002/ejoc.201301003
日期:2013.10
Potassiumarylethynyltrifluoroborates, the intermediates generated by the Sonogashirareaction of potassium ethynyltrifluoroborate with various aryl halides, were directly coupled with azides in the presence of a stoichiometric amount of CuI under aqueous conditions, and the desired 1,4-disubstituted1,2,3-triazoles were isolated in good yields. Both electron-donating and electron-withdrawing substituents
芳基乙炔基三氟硼酸钾是由乙炔基三氟硼酸钾与各种芳基卤化物的 Sonogashira 反应生成的中间体,在含水条件下在化学计量的 CuI 存在下与叠氮化物直接偶联,并获得所需的 1,4-二取代的 1,2,3-以良好的收率分离出三唑。芳基乙炔基三氟硼酸钾上的给电子和吸电子取代基均得到中等至极好的分离产物产率。
A new solvent system for efficient synthesis of 1,2,3-triazoles
作者:Bo-Young Lee、So Ra Park、Heung Bae Jeon、Kwan Soo Kim
DOI:10.1016/j.tetlet.2006.05.079
日期:2006.7
The use of CH2Cl2 as a co-solvent with H2O in the copper(I)-catalyzed 1,3-dipolar cycloaddition of organic azides and alkynes increased reaction rates and provided the corresponding 1,2,3-triazoles in excellent yields compared to other organic co-solvent systems. Moreover, we applied this discovery to prepare the functional multivalent compound in an excellent yield.
Cu-catalyzed azide–alkyne cycloaddition reaction in aqueous medium was dramatically accelerated by a simple zwitterionic additive, betaine, at ambient temperature. In the presence of betaine, 1,4-disubstituted-1,2,3-triazoles were obtained from azides and terminal alkynes in excellent yields under 2.5–200 ppm levels of Cu(I) in water. This method resulted in the remarkable reduction of the Cu(I) concentration