Results 111 to 120 of about 8,043 (225)

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

J Am Chem Soc, 2021
Dones JM, Abularrage NS, Khanal N, Gold B, Raines RT.   +4 more
europepmc   +1 more source

Regio- and Diastereoselective 1,3-Dipolar Cycloadditions of 1,2,4-Triazin-1-ium Ylides: a Straightforward Synthetic Route to Polysubstituted Pyrrolo[2,1-f][1,2,4]triazines. [PDF]

ACS Omega, 2022
Galeta J, Šlachtová V, Dračínský M, Vrabel M.   +3 more
europepmc   +1 more source

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

Molecules, 2021
Bastrakov MA, Fedorenko AK, Starosotnikov AM, Shakhnes AK.   +3 more
europepmc   +1 more source

Dimerization reactions of aryl selenophen-2-yl-substituted thiocarbonyl S-methanides as diradical processes: a computational study

Beilstein Journal of Organic Chemistry, 2017
An intriguing stepwise diradical mechanism of the dimerization of the reactive intermediate (thiocarbonyl S-methanide) appearing in the reaction of phenyl selenophen-2-yl thioketone with diazomethane was studied by means of computational methods.
Michael L. McKee, Grzegorz Mlostoń, Katarzyna Urbaniak, Heinz Heimgartner   +3 more
doaj   +1 more source

Synthesis of chiral-at-metal rhodium complexes from achiral tripodal tetradentate ligands: resolution and application to enantioselective Diels-Alder and 1,3-dipolar cycloadditions. [PDF]

RSC Adv, 2022
Tejero AG, Carmona M, Rodríguez R, Viguri F, Lahoz FJ, García-Orduña P, Carmona D.   +6 more
europepmc   +1 more source

Multicomponent syntheses of pyrazoles via (3 + 2)-cyclocondensation and (3 + 2)-cycloaddition key steps

Beilstein Journal of Organic Chemistry
Pyrazoles are rarely found in nature but are traditionally used in the agrochemical and pharmaceutical industries, while other areas of use are also actively developing. However, they have also found numerous other applications.
Ignaz Betcke, Alissa C. Götzinger, Maryna M. Kornet, Thomas J. J. Müller   +3 more
doaj   +1 more source

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

, 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, Ikhlef, Djamila, Kahlal, Samia, Maouche, Boubekeur, Saillard, Jean-Yves, Wang, Changlong   +5 more
core   +3 more sources

Intermolecular 1,3-dipolar cycloadditions of azomethine imines

ARKIVOC, 2006
Raymond C. F. Jones, Stephen J. Hollis, James N. Iley   +2 more
doaj   +1 more source

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

, 1991
Baran, Janusz, Heigl, Ulrich W., Mayr, Herbert   +2 more
core   +1 more source

Cycloaddition reactions of nitrosoalkenes, azoalkenes and nitrile oxides mediated by hydrotalcite [PDF]

, 2012
Mg:Al 3:1 hydrotalcite (Ht), used in catalytic quantities, promotes the generation of nitrosoalkenes, azoalkenes and nitrile oxides. These can be intercepted in situ by heterocycles and olefins in [4+2] and [3+2] cycloaddition reactions, producing ...
Lemos, A., Lourenço, J. P.
core