Results 101 to 110 of about 1,429 (148)

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
openaire   +1 more source

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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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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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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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
openaire   +2 more sources

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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Intramolecular Schmidt Reaction of Vinyl Azides with Cyclic Ketones

Organic Letters, 2018
Cyclic ketones tethered with a vinyl azide group undergo a Schmidt-hydrolysis sequence to give secondary lactams bearing a ketone side chain. Secondary lactams are obtained in a regioselective manner that is not possible in a conventional Schimdt reaction.
Peng Chen, Chu-Han Sun, Yu Wang, Ying Xue, Chen Chen, Mei-Hua Shen, Hua-Dong Xu   +6 more
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Reactions of vinyl azides and β‐haloalkyl azides with active methylene compounds. Synthesis of 1‐vinyl‐1,2,3‐triazoles

Journal of Heterocyclic Chemistry, 1970
AbstractA general synthetic approach to the yet unknown class of 1‐vinyl‐1,2,3‐triazoles is the condensation of active methylene compounds with vinyl azides or their precursors, the β‐haloalkyl azides, in the presence of an alkoxide. Triazole‐4‐carboxylic acids prepared in this manner are decarboxylated smoothly on heating above their melting point ...
G. L'abbé, Alfred Hassner
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The reaction of vinyl azides with sulfoxonium ylids. Synthesis of n-vinyl triazolines and vinyl aziridines.

Tetrahedron Letters, 1981
Abstract Vinyl azides 1 react with dimethylsulfoxonium ylid 3 at the azide function to produce in high yield 1-vinyl-4,5-unsubstituted-Δ-1, 2 -1,2,3-triazolines 4 . Vacuum flash pyrolysis of 4 furnished N-vinylaziridines 7 without formation of pyrolines.
Alfred Hassner, Benjamin A. Belinka, Mark Haber, Paul Hunger   +3 more
openaire   +1 more source