Buscar
Mostrando ítems 1-10 de 621
Application of copper(I)-catalysed azide/alkyne cycloaddition (CuAAC) `click chemistry` in carbohydrate drug and neoglycopolymer synthesis
(PERGAMON-ELSEVIER SCIENCE LTD, 2010)
Quantitative characterization of the global electrophilicity pattern of some reagents involved in 1,3-dipolar cycloaddition reactions
(Elsevier, 2003)
The global electrophilicity power, ω, of a series of dipoles and dipolarophiles commonly used in 1,3-dipolar cycloadditions may be conveniently classified within a unique relative scale. The effects of chemical substitution ...
π-strain-induced electrophilicity in small cycloalkynes: A DFT analysis of the polar cycloaddition of cyclopentyne towards enol ethers
(2006)
Small cycloalkynes possess a π-strain-induced electrophilicity related to the bending of the Csp3-Csp-Csp bond angle. For cyclopentyne and benzyne, the electrophilicity index defined in the context of density functional ...
Quantitative characterization of the global philicity patterns of common diene/dienophile pairs in cycloaddition reactions II: the interacting pair model
(Elsevier, 2015)
We present a unified model of electrophilicity and nucleophilicity that considers the electrophile/nucleophile
pair in an interacting regime, thereby avoiding the arbitrariness of defining them as the opposite
ends of a ...
Exploring azide-enolate cycloaddition in the synthesis of novel Rufinamide analogs
(Tetrahedron Letters, 2018)
Intramolecular azide-alkene cycloaddition-elimination reaction in an aldohex-2-enonic acid derivative
(Elsevier, 2019-09)
A 6-azido-2-tosylenolate, obtained from D-glucono-1,5-lactone in six steps, underwent an intramolecular cycloaddition–elimination pathway under mild conditions, yielding a chiral, substituted 5,6-dihydro-4H-pyrrolo ...
A Theoretical Study of 2-nitrofuran vs 3-nitrofuran as Dienophilic Electrophile in Polar Cycloaddition Reaction: Comparison of the Reactivity and Reaction Mechanism
(ScienceDomain international, 2016-11)
In this study, we analyzed in a theoretical form the behavior of 2-nitrofuran and 3-nitrofuran acting as dienophilic electrophiles in polar cycloaddition reactions joint to different dienes. The reactivity and regioselectivity ...
1,3-dipolar cycloadditions of the versatile intermediate tetraethyl vinylidenebisphosphonate
(Georg Thieme Verlag Kg, 2013-09)
The use of tetraethyl vinylidenebisphosphonate as a dipolarophile in 1,3-dipolar cycloaddition reactions was investigated. In particular, the cycloaddition reactions between tetraethyl vinylidenebisphosphonate and azides ...