Results 11 to 20 of about 25,600 (309)

Chemical Activation in Azide and Nitrene Chemistry: Methyl Azide, Phenyl Azide, Naphthyl Azides, Pyridyl Azides, Benzotriazoles, and Triazolopyridines [PDF]

Australian Journal of Chemistry, 2013
Chemical activation (the formation of ‘hot’ molecules due to chemical reactions) is ubiquitous in flash vacuum thermolysis (FVT) reactions, and awareness of this phenomenon is indispensable when designing synthetically useful gas-phase reactions. Chemical activation is particularly prevalent in azide chemistry because the interesting singlet nitrenes ...
openaire   +4 more sources

Synthesis of Chromium(II) Complexes with Chelating Bis(alkoxide) Ligand and Their Reactions with Organoazides and Diazoalkanes

Molecules, 2020
Synthesis of new chromium(II) complexes with chelating bis(alkoxide) ligand [OO]Ph (H2[OO]Ph = [1,1′:4′,1′’-terphenyl]-2,2′’-diylbis(diphenylmethanol)) and their subsequent reactivity in the context of catalytic ...
Sudheer S. Kurup, Richard J. Staples, Richard L. Lord, Stanislav Groysman   +3 more
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Divergent synthesis of chiral cyclic azides via asymmetric cycloaddition reactions of vinyl azides

Nature Communications, 2019
Vinyl azides generally act as 3-atom synthon through the fast release of molecular nitrogen, whereas keeping the azide group intact is more challenging. Here, the authors show a copper-catalyzed enantioselective cycloaddition of two types of vinyl azides
Nuligonda Thirupathi, Fang Wei, Chen-Ho Tung, Zhenghu Xu   +3 more
doaj   +1 more source

Crystal structure and spectroscopic properties of (E)-1,3-dimethyl-2-[3-(4-nitrophenyl)triaz-2-enylidene]-2,3-dihydro-1H-imidazole

Acta Crystallographica Section E: Crystallographic Communications, 2021
The title compound (E)-1,3-dimethyl-2-[3-(4-nitrophenyl)triaz-2-enylidene]-2,3-dihydro-1H-imidazole, C11H12N6O2, has monoclinic (C2/c) symmetry at 100 K.
Hector Mario Heras Martinez, David Chavez Flores, Patrick C. Hillesheim, Siddappa Patil, Alejandro Bugarin   +4 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

Mn(iii)-Catalyzed Radical Reactions of 1,3-Dicarbonyl Compounds and Cyclopropanols with Vinyl Azides for Divergent Synthesis of Azaheterocycles

CHIMIA, 2012
Mn(iii)-catalyzed formal [3+2]- and [3+3]-annulations have been developed using readily available vinyl azides with 1,3-dicarbonyl compounds and cyclopropanols.
Shunsuke Chiba
doaj   +1 more source

EPR and pulsed ENDOR study of intermediates from reactions of aromatic azides with group 13 metal trichlorides

Beilstein Journal of Organic Chemistry, 2010
The reactions of group 13 metal trichlorides with aromatic azides were examined by CW EPR and pulsed ENDOR spectroscopies. Complex EPR spectra were obtained from reactions of aluminium, gallium and indium trichlorides with phenyl azides containing a ...
Giorgio Bencivenni, Riccardo Cesari, Daniele Nanni, Hassane El Mkami, John C. Walton   +4 more
doaj   +1 more source

Multistep flow synthesis of vinyl azides and their use in the copper-catalyzed Huisgen-type cycloaddition under inductive-heating conditions

Beilstein Journal of Organic Chemistry, 2011
The multistep flow synthesis of vinyl azides and their application in the synthesis of vinyltriazoles is reported. The synthesis relies on a stable polymer-bound equivalent of iodine azide that serves to carry out 1,2-functionalization of alkenes in a ...
Lukas Kupracz, Jan Hartwig, Jens Wegner, Sascha Ceylan, Andreas Kirschning   +4 more
doaj   +1 more source

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
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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