Results 31 to 40 of about 71,291 (332)

Synthesis and Properties of 6-Aryl-4-azidocinnolines and 6-Aryl-4-(1,2,3-1H-triazol-1-yl)cinnolines

Molecules, 2019
An efficient approach towards the synthesis of 6-aryl-4-azidocinnolines was developed with the aim of exploring the photophysical properties of 6-aryl-4-azidocinnolines and their click reaction products with alkynes, 6-aryl-4-(1,2,3-1H-triazol-1-yl ...
Natalia A. Danilkina, Nina S. Bukhtiiarova, Anastasia I. Govdi, Anna A. Vasileva, Andrey M. Rumyantsev, Artemii A. Volkov, Nikita I. Sharaev, Alexey V. Povolotskiy, Irina A. Boyarskaya, Ilya V. Kornyakov, Polina V. Tokareva, Irina A. Balova   +11 more
doaj   +1 more source

Design and synthesis of a bis-macrocyclic host and guests as building blocks for small molecular knots

Beilstein Journal of Organic Chemistry, 2020
The thread–link–cut (TLC) approach has previously shown promise as a novel method to synthesize molecular knots. The modular second-generation approach to small trefoil knots described herein involves electrostatic interactions between an electron-rich ...
Elizabeth A. Margolis, Rebecca J. Keyes, Stephen D. Lockey IV, Edward E. Fenlon   +3 more
doaj   +1 more source

A Novel Approach to Functionalization of Organic Azides via Generation and Reactions of Organolithiums Bearing Masked Azides Using Flow Microreactors.

Angewandte Chemie, 2019
A novel straightforward method for aryl azides having functional groups based on generation and reactions of aryllithiums bearing a triazene group from polybromoarenes using flow microreactor systems.
D. Ichinari, Yosuke Ashikari, K. Mandai, Yoko Aizawa, J. Yoshida, A. Nagaki   +5 more
semanticscholar   +1 more source

TMSBr-Promoted Cascade Cyclization of ortho-Propynol Phenyl Azides for the Synthesis of 4-Bromo Quinolines and Its Applications

Molecules, 2019
Difficult-to-access 4-bromo quinolines are constructed directly from easily prepared ortho-propynol phenyl azides using TMSBr as acid-promoter. The cascade transformation performs smoothly to generate desired products in moderate to excellent yields with
Fengyan Jin, Tao Yang, Xian-Rong Song, Jiang Bai, Ruchun Yang, Haixin Ding, Qiang Xiao   +6 more
doaj   +1 more source

Cobalt‐Porphyrin‐Catalysed Intramolecular Ring‐Closing C−H Amination of Aliphatic Azides: A Nitrene‐Radical Approach to Saturated Heterocycles

Chemistry, 2017
Cobalt‐porphyrin‐catalysed intramolecular ring‐closing C−H bond amination enables direct synthesis of various N‐heterocycles from aliphatic azides. Pyrrolidines, oxazolidines, imidazolidines, isoindolines and tetrahydroisoquinoline can be obtained in ...
P. F. Kuijpers, M. Tiekink, Willem B. Breukelaar, D. Broere, N. P. van Leest, J. I. van der Vlugt, J. Reek, B. de Bruin   +7 more
semanticscholar   +1 more source

Synthesis and Characterization of Azido- and Nitratoalkyl Nitropyrazoles as Potential Melt-Cast Explosives

Molecules, 2023
Desirable advancements in the field of explosive materials include the development of novel melt-castable compounds with melting points ranging from 80 to 110 °C.
Elena Reinhardt, Tobias Lenz, Lukas Bauer, Jörg Stierstorfer, Thomas M. Klapötke   +4 more
doaj   +1 more source

Infrared spectra of acid azides, carbamyl azides and other azido derivatives

, 1963
The infrared spectra of organic acid azides, carbamyl azides, vinyl azides and alphaazido ethers, thioethers and amines have been investigated in detail. The acid azides and the carbamyl azides show the characteristic N3 and carbonyl absorptions and have
C.N.R. Rao, R. Minnis, Lieber, Eugene, Thomas, A. E., A.E. Thomas, Minnis, R., Rao, C. N. R., Nambury, C. V. N., E. Oftedahl, Eugene Lieber, C.V.N. Nambury, Oftedahl, E.   +11 more
core   +1 more source

Understanding the Fate of the Banert Cascade of Propargylic Azides. Sigmatropic versus Prototropic Pathway

, 2023
The Banert cascade is an efficient synthetic strategy for obtaining 4,5-disubstituted 1,2,3-triazoles. The reaction can proceed via a sigmatropic or prototropic mechanism depending on the substrate and the conditions.
Miguel, Villareal-Parra, Gabriel E. , Di Gresia, Guillermo R., Labadie, Margarita M., VALLEJOS   +3 more
core   +1 more source

Strain-Promoted 1,3-Dipolar Cycloaddition of Cycloalkynes and Organic Azides

Topics in current chemistry, 2016
A nearly forgotten reaction discovered more than 60 years ago—the cycloaddition of a cyclic alkyne and an organic azide, leading to an aromatic triazole—enjoys a remarkable popularity.
J. Dommerholt, F. Rutjes, F. V. van Delft   +2 more
semanticscholar   +1 more source

EDNRB‐dependent endothelin signaling reduces proliferation and promotes proneural‐to‐mesenchymal transition in gliomas

Molecular Oncology, EarlyView.
Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau, Leonor Garcia, Hugo Arnold, Antonija Hanžek, Maialen Arrieta, Laurent R Gauthier, Christine Granotier‐Beckers, François D Boussin, Amaury Herbet, Marie Hautière, Valentin Asei‐Ceschino, Clémentin Jacques, Laura Brard, Thomas Harnois, Valérie Coronas, Bruno Constantin, Aurélien Chatelier, Jean Chemin, Serge Urbach, Martial Seveno, Szimonetta Hideg, Chantal Ripoll, Kasandra Aguilar‐Cázarez, Min Zheng, Guo‐Hao Huang, Sheng‐Qing Lv, Lei Zhang, Philippe Rondard, Laurent Prezeau, Jean‐Philippe Pin, Hugues Duffau, Luc Bauchet, Valérie Rigau, Franck Denat, Charles Truillet, Didier Boquet, Jean‐Philippe Hugnot   +36 more
wiley   +1 more source