Results 71 to 80 of about 15,378 (241)

Copper-Catalyzed One-Pot Synthesis of N-Sulfonyl Amidines from Sulfonyl Hydrazine, Terminal Alkynes and Sulfonyl Azides

Molecules, 2021
N-Sulfonyl amidines are developed from a Cu-catalyzed three-component reaction from sulfonyl hydrazines, terminal alkynes and sulfonyl azides in toluene at room temperature.
Yu Zhao, Zitong Zhou, Man Chen, Weiguang Yang   +3 more
doaj   +1 more source

Phase transfer agent assisted biphasic CuAAC reaction

RSC Advances, 2014
A phase transfer agent assisted biphasic Cu(I) catalyzed azide–alkyne 1,3-dipolar cycloaddition (CuAAC) reaction system was developed. A biphasic reaction medium consisting of water and an organic solvent ensures the dissolution of reagents and substrates. Tris(triazolylmethyl)amine ligands with an appropriate hydrophilic–lipophilic balance are able to
Jae Hyun Kim, Sanghee Kim
openaire   +1 more source

A Synergistic Inhibitor Development Strategy Against Human UDP‐Galactose‐4‐Epimerase

Angewandte Chemie International Edition, EarlyView.
The epimerase GalE is crucial for the biosynthesis of cancer‐relevant O‐GalNAc glycans. Here, we employ orthogonal, structurally enabled small molecule fragment screens to yield both covalent and non‐covalent inhibitors against GalE within no more than 22 elaborated compounds.
William M. Browne, Jonathan Pettinger, Teresa Weckwerth, Andrew Purkiss, Sing Hei Lok, Louisa Penicaut, Roksana Ogrodowicz, Raveena Prema, Simone Kunzelmann, Chloe Roustan, Ganka Bineva‐Todd, Saskia Pieters, Francesca Zappacosta, Alfred E. Doherty, Isobel Oram, Christelle Soudy, Robert Quinlan, Joanna Redmond, Svend Kjaer, David House, Stephane Mouilleron, Jacob T. Bush, Benjamin Schumann   +22 more
wiley   +1 more source

Copper(I)-catalyzed tandem reaction: synthesis of 1,4-disubstituted 1,2,3-triazoles from alkyl diacyl peroxides, azidotrimethylsilane, and alkynes

Beilstein Journal of Organic Chemistry, 2018
A copper-catalyzed azide–alkyne cycloaddition (CuAAC) reaction for the synthesis of 1,4-disubstituted 1,2,3-triazoles from alkyl diacyl peroxides, azidotrimethylsilane, and terminal alkynes is reported.
Muhammad Israr, Changqing Ye, Munira Taj Muhammad, Yajun Li, Hongli Bao   +4 more
doaj   +1 more source

Solvent-Free Copper-Catalyzed Azide-Alkyne Cycloaddition under Mechanochemical Activation

Molecules, 2015
The ball-mill-based mechanochemical activation of metallic copper powder facilitates solvent-free alkyne-azide click reactions (CuAAC). All parameters that affect reaction rate (i.e., milling time, revolutions/min, size and milling ball number) have been
Laura Rinaldi, Katia Martina, Francesca Baricco, Laura Rotolo, Giancarlo Cravotto   +4 more
doaj   +1 more source

Nano‐Gs Protein Peptidomimetics: Rational Design of Gα C‐Terminus‐Derived Peptides Mimicking Key Components of Gs‐β2AR Interactions

Angewandte Chemie International Edition, EarlyView.
G protein‐coupled receptors (GPCRs) are major therapeutic targets. Modulating GPCR activity through intracellular sites is evolving. A structure‐ and computation‐assisted approach generated small G protein‐derived peptidomimetics targeting the intracellular binding crevice of the β2 adrenergic receptor mimicking features of the full G protein.
Phuong Thu Tran, Mia Danielsen, Johanna K. S. Tiemann, Passainte Ibrahim, Søren G. F. Rasmussen, Xavier Kubiak, Hossein Batebi, Charlène Gadais, Steven Ballet, Peter W. Hildebrand, Daniel Sejer Pedersen, Jesper Mosolff Mathiesen   +11 more
wiley   +1 more source

Synthesis of Phospholipid-Protein Conjugates as New Antigens for Autoimmune Antibodies

Molecules, 2015
Copper(I)-catalyzed azide-alkyne cycloaddition, or CuAAC click chemistry, is an efficient method for bioconjugation aiming at chemical and biological applications.
Arindam Maity, Claudia Macaubas, Elizabeth Mellins, Kira Astakhova   +3 more
doaj   +1 more source

Selective C(sp2)−H Halogenation of "click" 4-Aryl-1,2,3-triazoles [PDF]

, 2017
Selective bromination reactions of “click compounds” are described. Electron-neutral and electron-deficient arenes selectively undergo unprecedented Pd-catalyzed C–H ortho-halogenations assisted by simple triazoles as modular directing groups, whereas ...
Correa Navarro, Arkaitz, Goitia, Asier, Gómez Bengoa, Enrique   +2 more
core   +3 more sources

Stepwise, Protecting Group Free Synthesis of [4]Rotaxanes

Molecules, 2017
Despite significant advances in the last three decades towards high yielding syntheses of rotaxanes, the preparation of systems constructed from more than two components remains a challenge.
James E. M. Lewis, Joby Winn, Stephen M. Goldup   +2 more
doaj   +1 more source

Fluorophore-Assisted Click Chemistry through Copper(I) Complexation

Biomolecules, 2020
The copper-catalyzed alkyne-azide cycloaddition (CuAAC) is one of the most powerful chemical strategies for selective fluorescent labeling of biomolecules in in vitro or biological systems. In order to accelerate the ligation process and ensure efficient
Victor Flon, Magalie Bénard, Damien Schapman, Ludovic Galas, Pierre-Yves Renard, Cyrille Sabot   +5 more
doaj   +1 more source