نتایج جستجو برای: catalyzed huisgen cycloaddition

تعداد نتایج: 46547  

2013
Morgane Gaydou Antonio M Echavarren

Cycloadditions of azides with alkynes to form triazoles under thermal conditions (Huisgen cycloaddition) or in the presence of copper [click reaction, copper-catalyzed azide– alkyne cycloaddition (CuAAC)] are reactions of fundamental importance in organic chemistry. Triazoles can also be obtained by means of ruthenium, silver, and iridium catalysis, as well as by a zinc-mediated process. In sha...

2015
Dileep Kumar Singh Mahendra Nath

A novel series of β-triazoloporphyrin-xanthone conjugates and xanthone-bridged β-triazoloporphyrin dyads has been synthesized in moderate to good yields through Cu(I)-catalyzed Huisgen 1,3-dipolar cycloaddition reaction of copper(II) 2-azido-5,10,15,20-tetraphenylporphyrin or zinc(II) 2-azidomethyl-5,10,15,20-tetraphenylporphyrin with various alkyne derivatives of xanthones in DMF containing Cu...

2011
Lukas Kupracz Jan Hartwig Jens Wegner Sascha Ceylan Andreas Kirschning

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 telescope flow protocol. The intermediate 2-iodo azides are subjected to a DBU-mediated polymer-supported elimination step yielding vinyl azides ...

Journal: :Anales De La Real Academia Nacional De Farmacia 2022

The first achievement of the 2022 Chemistry Nobel Prize awardees, Sharpless in particular, was a conceptual nature and consisted proposal click chemistry concept, together with its placement broader theoretical frame. In second phase, both Meldal established copper(I)-catalyzed conditions that allowed Huisgen 1,3-dipolar cycloaddition to be recognized as reaction, which broadly employed all fie...

Journal: :Chemical communications 2005
Dirk T S Rijkers G Wilma van Esse Remco Merkx Arwin J Brouwer Hans J F Jacobs Roland J Pieters Rob M J Liskamp

Multivalent dendrimeric peptides were synthesized via a microwave-assisted Huisgen 1,3-dipolar cycloaddition between azido peptides and dendrimeric alkynes in yields ranging from 46 to 96%.

Journal: :Chemical communications 2005
A J Ton Dirks Sander S van Berkel Nikos S Hatzakis Joost A Opsteen Floris L van Delft Jeroen J L M Cornelissen Alan E Rowan Jan C M van Hest Floris P J T Rutjes Roeland J M Nolte

Biohybrid amphiphiles have been prepared from terminal azide functionalised polystyrene and an alkyne functionalised peptide or protein via a Cu(I) catalysed Huisgen [3 + 2] dipolar cycloaddition reaction.

Journal: :Bioorganic & medicinal chemistry letters 2007
Martijn Verdoes Ulrik Hillaert Bogdan I Florea Myra Sae-Heng Martijn D P Risseeuw Dmitri V Filippov Gijsbert A van der Marel Herman S Overkleeft

The synthesis of three acetylene functionalized BODIPY dyes is described. These dyes are used to fluorescently modify an azido functionalized epoxomicin analogue employing the Huisgen 1,3-dipolar cycloaddition, resulting in a panel of fluorescent epoxomicin derived proteasome probes.

2013
K. Ajay Kumar

The 1,3-Dipolar cycloaddition reactions are the classic reaction in modern synthetic organic chemistry. The concept of these reactions was introduced by Huisgen and his co-workers in the early 1960’s. 1,3-Dipolar cycloaddition reactions are simple but powerful tool for the construction of five membered heterocycles such as isoxazoles, isoxazolines, pyrazoles, pyrazolones, 1,2,4-oxadiazolines et...

Journal: :Chemical communications 2009
Annabelle Scarpaci Errol Blart Véronique Montembault Laurent Fontaine Vincent Rodriguez Fabrice Odobel

The thermal Huisgen cycloaddition reaction is a new and efficient process to crosslink electro-optic polymers, since it leads to an effective increase of the thermal alignment stability of the NLO chromophores.

Journal: :Chemical communications 2008
Julien Iehl Rossimiriam Pereira de Freitas Béatrice Delavaux-Nicot Jean-François Nierengarten

A Th-symmetrical C60 hexakis-adduct bearing 12 peripheral azide groups has been prepared and used to produce functionalized derivatives by the copper mediated Huisgen 1,3-dipolar cycloaddition of azides and alkynes.

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