Results 121 to 130 of about 34,105 (267)

Stereoselective Intramolecular Azide 1,3-Dipolar Cycloaddition

open access: yesHETEROCYCLES, 2003
Ethyl (E)-7-azido-6-[bis(tert-butoxycarbonyl)amino]-2-heptenoate undergoes a stereoselective intramolecular azide 1,3-dipolar cycloaddition leading to a stable triazoline. The configuration and the conformation of the triazoline obtained were determined by spectroscopic data and confirmed by molecular mechanics calculations.
Markidis, T., Mikros, E., Kokotos, G.
openaire   +2 more sources

1,3‐Dipolar Cycloaddition of Dipolar Reagents to Bis(styryl) Sulfones.

open access: yesChemInform, 2002
AbstractFor Abstract see ChemInform Abstract in Full Text.
V. Padmavathi   +4 more
openaire   +1 more source

Synthesis of new triazole-based trifluoromethyl scaffolds

open access: yesBeilstein Journal of Organic Chemistry, 2008
Trifluoromethyl propargylamines react with various azide derivatives to afford 1,4-disubstituted 1,2,3-triazoles through a Huisgen 1,3-dipolar cycloaddition. The reaction is catalyzed by a Cu(I) species in acetonitrile, and the corresponding products are
Michela Martinelli   +3 more
doaj   +1 more source

Surface modification of UV Cured epoxy resins by click Chemistry

open access: yes, 2010
A novel method for surface modification of UV-cured epoxy network was described. Photoinitiated cationic copolymerization of a bisepoxide, namely 3,4-epoxy cyclohexylmethyl 3,4-epoxycyclohexanecarboxylate (EEC) with epibromohydrine (EBH) by using a ...
Abadie   +47 more
core   +1 more source

Reaction Mechanisms of Transition-Metal-Catalyzed Azide-Alkyne Cycloaddition “Click” Reactions: A DFT Investigation

open access: yes, 2015
International audienceDFT calculations at the PBE0/LANL2DZ level have been performed on model compounds to investigate the reaction mechanism of two recently reported metal-catalyzed alkyne azide cycloaddition (MAAC).
Astruc, Didier   +5 more
core   +3 more sources

Cyaphide-Azide 1,3-Dipolar Cycloaddition Reactions: Scope and Applicability. [PDF]

open access: yesChemistry, 2023
Yang ES   +4 more
europepmc   +1 more source

Synthesis of some isoxazoline, isoxazole and pyrazole carboxylic acids as the precursors of new 1,2-diacyl-1-alkylhydrazines [PDF]

open access: yes, 2013
A number of isoxazoline, isoxazole and pyrazole carboxylic acids or their esters has been synthesized via the 1,3-dipolar cycloaddition of corresponding nitrile oxides or diazomethane to unsaturated dipolarophiles.
Antonevich, I. P., Katok, Ya. M.
core  

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