Results 111 to 120 of about 8,699 (217)

Acceleration of 1,3-Dipolar Cycloadditions by Integration of Strain and Electronic Tuning. [PDF]

open access: yesJ Am Chem Soc, 2021
Dones JM   +4 more
europepmc   +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

An overview of the cycloaddition chemistry of fulvenes and emerging applications

open access: yesBeilstein Journal of Organic Chemistry, 2019
The unusual electronic properties and unique reactivity of fulvenes have interested researchers for over a century. The propensity to form dipolar structures at relatively low temperatures and to participate as various components in cycloaddition ...
Ellen Swan   +2 more
doaj   +1 more source

Electrocyclic Ring‐Opening of 1,2,4‐Oxadiazole[4,5‐a]piridinium Chloride: a New Route to 1,2,4‐Oxadiazole Dienamino Compounds

open access: yesChemistryOpen, 2019
1,2,4‐Oxadiazole[4,5‐a]piridinium chloride adds nucleophiles to undergo electrocyclic ring opening affording 1,2,4‐oxadiazole dienamino derivatives. These pyridinium salts represent a special class of Zincke salts that are prone to rearrange when treated
Dr. Stefano Carella   +2 more
doaj   +1 more source

Relative Rates of Metal-Free Azide-Alkyne Cycloadditions: Tunability over 3 Orders of Magnitude. [PDF]

open access: yes, 2019
The thermal (3 + 2) dipolar azide-alkyne cycloaddition, proceeding without copper or strained alkynes, is an underutilized ligation with potential applications in materials, bioorganic, and synthetic chemistry.
Braslau, Rebecca   +6 more
core  

3,3,4,4,5,5-Hexamethyl-1,2-bis(methylene)cyclopentane [PDF]

open access: yes, 1991
Baran, Janusz   +2 more
core   +1 more source

Intermolecular 1,3-dipolar cycloadditions of azomethine imines

open access: yesARKIVOC, 2006
Raymond C. F. Jones   +2 more
doaj   +1 more source

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