Results 111 to 120 of about 1,453 (161)

Isomerisation of Vinyl Sulfones for the Stereoselective Synthesis of Vinyl Azides

European Journal of Organic Chemistry, 2020
Reported is the construction, and facile base‐mediated conversation of ten differently substituted 3‐azido E‐vinyl sulfones (γ‐azido‐α,β‐unsaturated sulfones) into their isomeric vinyl azide counterparts. The requisite 3‐azido E‐vinyl sulfones were prepared from 3‐bromo E‐vinyl sulfones, which in turn were accessed from allyl sulfones via a bromination‐
Collins, Niall, Connon, Robert, Sanchez Sanz, Goar; id_orcid 0000-0002-1390-4004, Evans, Paul   +3 more
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Vinyl Azides as Diazoenamines

Canadian Journal of Chemistry, 1973
Reaction of vinyl azides with nitrosyl tetrafluoroborate yields 1,2,5-oxadiazoles and 1,2,4-oxadiazoles depending on the structure of the azide. Reaction of 1,2-dialkyl vinyl azides with nitryl tetrafluoroborate gives 2-oxo-1,2,5-oxadiazoles in high yields whereas 1-aryl-2-alkyl vinyl azides gave moderate yields of 3-aryl-1,2,5-oxadiazoles and 5-aryl ...
A. N. Thakore, J. Buchshriber, A. C. Oehlschlager   +2 more
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Computational Study on the Vinyl Azide Decomposition

The Journal of Physical Chemistry A, 2014
The decomposition mechanism of vinyl azide (CH2CHN3) has been studied by calculations of the electronic structure. In addition, a study based on the topology of the electron charge density distribution and its Laplacian function, within the Quantum Theory of Atoms in Molecules (QTAIM), has been carried out with the aim of comprehending the electron ...
Darío J R, Duarte, Margarida S, Miranda, Joaquim C G, Esteves da Silva   +2 more
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Photolysis of vinyl bromides in the presence of tetrabutylammonium azide: trapping of a vinyl cation with azide ion

Tetrahedron Letters, 1979
Abstract Vinyl cations generated by the title photolysis gave vinyl azides by capture of an azide ion and their further photolyses resulted in the formation of cycloaddition-products via nitrile ylides derived from the corresponding azirines.
Tsugio Kitamura, Shinjiro Kobayashi, Hiroshi Taniguchi   +2 more
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Reactions of Fluoroalkanesulfonyl Azides with Cyclic Vinyl Ethers.

ChemInform, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Shi-Zheng Zhu, Gui-Fang Jin, Jing-Wei Zhao   +2 more
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ChemInform Abstract: PHOTOLYSIS OF VINYL BROMIDES IN THE PRESENCE OF TETRABUTYLAMMONIUM AZIDE. TRAPPING OF A VINYL CATION WITH AZIDE ION

Chemischer Informationsdienst, 1979
AbstractAus dem Vinylbromid (I) erhält man bei der Photolyse in Gegenwart von Tetrabutylammoniumazid (II) über diskutierte Zwischenstufen das Folgeprodukt (III).
T. KITAMURA, S. KOBAYASHI, H. TANIGUCHI
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ChemInform Abstract: VINYL AZIDES AS DIAZOENAMINES

Chemischer Informationsdienst, 1973
AbstractIn Abhängigkeit von der Struktur reagieren Vinylazide mit NOBF4 zu l,2,5‐ und 1,2,4‐Oxadiazolen.
A. N. THAKORE, J. BUCHSHRIBER, A. C. OEHLSCHLAGER   +2 more
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The microwave spectrum of vinyl azide

Journal of Molecular Spectroscopy, 1977
Abstract Vinyl azide has been shown to exist in both cis and trans conformations with the cis more stable by 460 cal/mole. The rotational constants in Megahertz are: cis, A = 14 698.23, B = 4088.44, C = 3195.64; trans, A = 46 761.19, B = 2751.40, C = 2598.83.
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Fluorocyclization of Vinyl Azides for the Formation of 3‐Azido Heterocycles

Chemistry – An Asian Journal, 2020
Abstract3‐Azido saturated heterocycles are important for therapeutic‐development but challenging to prepare. Disclosed herein is a novel synthetic strategy for 3‐azido heterocycles via fluorocyclization of the easily available vinyl azides. This transfor‐mation proceeded under mild conditions and provided a wide range of 3‐azido heterocycles in good to
Diangang Bai, Linxuan Li, Xiaomeng Li, Ying Lu, Yong Wu, Bhoomireddy Rajendra Prasad Reddy, Yongquan Ning   +6 more
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Thermal and photochemical annulation of vinyl azides to 2-aminoimidazoles

Organic & Biomolecular Chemistry, 2019
The rapid and facile generation of diverse 2-aminoimidazoles via thermal or photochemical activation of vinyl azides has been investigated.
Lucas Man, Royston C. B. Copley, Anthony L. Handlon   +2 more
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