Results 1 to 10 of about 2,787 (213)

Nitropyridines as 2π-Partners in 1,3-Dipolar Cycloadditions with N-Methyl Azomethine Ylide: An Easy Access to Condensed Pyrrolines [PDF]

open access: yesMolecules, 2021
1,3-Dipolar cycloaddition reactions of 2-substituted 5-R-3-nitropyridines and isomeric 3-R-5-nitropyridines with N-methyl azomethine ylide were studied. The effect of the substituent at positions 2 and 5 of the pyridine ring on the possibility of the [3 ...
Maxim A. Bastrakov   +3 more
doaj   +2 more sources

Covalent organic functionalization of graphene nanosheets and reduced graphene oxide via 1,3-dipolar cycloaddition of azomethine ylide. [PDF]

open access: yesNanoscale Adv, 2021
Organic functionalization of graphene is successfully performed via 1,3-dipolar cycloaddition of azomethine ylide in the liquid phase. The comparison between 1-methyl-2-pyrrolidinone and N,N-dimethylformamide as dispersant solvents, and between sonication and homogenization as dispersion techniques, proves N,N-dimethylformamide and homogenization as ...
Basta L   +9 more
europepmc   +2 more sources

Conjugated Azomethine Ylides [PDF]

open access: greenChemInform, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Teresa M. V. D. Pinho e Melo
openalex   +5 more sources

Synthesis of bis-spirocyclic derivatives of 3-azabicyclo[3.1.0]hexane via cyclopropene cycloadditions to the stable azomethine ylide derived from Ruhemann's purple [PDF]

open access: yesBeilstein Journal of Organic Chemistry, 2022
A reliable method for the synthesis of bis-spirocyclic derivatives of 3-azabicyclo[3.1.0]hexanes through the 1,3-dipolar cycloaddition (1,3-DC) reactions of cyclopropenes to the stable azomethine ylide – protonated form of Ruhemann's purple (PRP) has ...
Alexander S. Filatov   +4 more
doaj   +2 more sources

Exploration of pyrazine-embedded antiaromatic polycyclic hydrocarbons generated by solution and on-surface azomethine ylide homocoupling [PDF]

open access: yesNature Communications, 2017
Polyaromatic hydrocarbons can be precisely manipulated to yield ever more complex and discrete graphene analogs, such as nanographenes. Here, the authors use azomethine ylide homocoupling to insert an antiaromatic pyrazine ring into the core of a ...
Xiao-Ye Wang   +15 more
doaj   +2 more sources

A Molecular Electron Density Theory Study of the [3+2] Cycloaddition Reaction of an Azomethine Ylide with an Electrophilic Ethylene Linked to Triazole and Ferrocene Units [PDF]

open access: yesMolecules, 2022
The [3+2] cycloaddition (32CA) reaction of an azomethine ylide (AY) with an electrophilic ethylene linked to triazole and ferrocene units has been studied within the Molecular Electron Density Theory (MEDT) at the ωB97X-D/6-311G(d,p) level.
Luis R. Domingo   +2 more
doaj   +2 more sources

Microwave‐Assisted [3 + 2] Cycloadditions of Azomethine Ylides. [PDF]

open access: greenChemInform, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
George Bashirhiardes   +4 more
openalex   +6 more sources

Unexpected Course of Reaction Between (1E,3E)-1,4-Dinitro-1,3-butadiene and N-Methyl Azomethine Ylide—A Comprehensive Experimental and Quantum-Chemical Study [PDF]

open access: yesMolecules
In recent times, interest in the chemistry of conjugated nitrodienes is still significantly increasing. In particular, the application of these compounds as building blocks to obtain heterocycles is a popular object of research.
Mikołaj Sadowski, Karolina Kula
doaj   +2 more sources

Azomethine Ylides—Versatile Synthons for Pyrrolidinyl-Heterocyclic Compounds

open access: yesMolecules, 2023
Azomethine ylides are nitrogen-based three-atom components commonly used in [3+2]-cycloaddition reactions with various unsaturated 2π-electron components.
Siva S. Panda   +3 more
doaj   +3 more sources

Surface Grafting of Graphene Flakes with Fluorescent Dyes: A Tailored Functionalization Approach. [PDF]

open access: yesNanomaterials (Basel)
The controlled functionalization of graphene is critical for tuning and enhancing its properties, thereby expanding its potential applications. Covalent functionalization offers a deeper tuning of the geometric and electronic structure of graphene compared to non-covalent methods; however, the existing techniques involve side reactions and spatially ...
Vlamidis Y   +5 more
europepmc   +2 more sources

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