Results 21 to 30 of about 66,858 (295)

Electrochemical Hydroboration of Alkynes [PDF]

Chemistry – A European Journal, 2021
AbstractHerein we reported the electrochemical hydroboration of alkynes by using B2Pin2 as the boron source. This unprecedented reaction manifold was applied to a broad range of alkynes, giving the hydroboration products in good to excellent yields without the need of a metal catalyst or a hydride source.
Maude Aelterman, Morgane Sayes, Philippe Jubault, Thomas Poisson   +3 more
openaire   +2 more sources

Alkyne Polymers from Stable Butatriene Homologues: Controlled Radical Polymerization of Vinylidenecyclopropanes [PDF]

, 2022
Controlled polymerization of cumulenic monomers represents a promising yet underdeveloped strategy towards well-defined alkyne polymers. Here we report a stereoelectronic effect-inspired approach using simple vinylidenecyclopropanes (VDCPs) as ...
Zheng-Lin, Wang, Qian-Jun, Ding, Bin, Wu, Rong, Zhu   +3 more
core   +2 more sources

Bidentate Lewis Acids Derived from o‐Diethynylbenzene with Group 13 and 14 Functions

ChemistryOpen, 2021
Starting from 1,2‐diethynylbenzene, a series of bidentate Lewis acids was prepared by means of hydrometalations, in particular hydrosilylation, hydroboration, hydroalumination and terminal metalation based on group 13 and 14 elements.
Jens Rudlof, Niklas Aders, Dr. Jan‐Hendrik Lamm, Beate Neumann, Dr. Hans‐Georg Stammler, Prof. Dr. Norbert W. Mitzel   +5 more
doaj   +1 more source

Crystal structure and Hirshfeld surface analysis of 1-benzyl-3-(prop-2-yn-1-yl)-2,3-dihydro-1H-1,3-benzodiazol-2-one

Acta Crystallographica Section E: Crystallographic Communications, 2018
The title compound, C17H14N2O, is built up from the planar benzodiazole unit linked to the benzyl and propynyl substituents. The substituents are rotated significantly out of the benzodiazole plane, where the benzyl group is inclined by 68.91 (7)° to the
Asmaa Saber, Nada Kheira Sebbar, Tuncer Hökelek, Mohamed El hafi, Joel T. Mague, El Mokhtar Essassi   +5 more
doaj   +1 more source

Cobalt-Catalyzed Asymmetric Construction of Boron Stereocenters With C-N Axial Chirality. [PDF]

Adv Sci (Weinh)
A cobalt/Salox‐catalyzed one‐pot annulation enables enantioselective formation of B‐stereogenic centers and C─N axial chirality via C─H/N─H annulation, affording diverse fluorescent products with high stereocontrol and optoelectronic potential. ABSTRACT The efficient construction of boron stereogenic centers alongside axial chirality remains a ...
Kumaran S, Ravi Sankar HS, Maity P, Premkumar JR, Das A, Sundararaju B.   +5 more
europepmc   +2 more sources

Palladium-catalyzed cross coupling reactions of 4-bromo-6H-1,2-oxazines

Beilstein Journal of Organic Chemistry, 2009
A number of 4-aryl- and 4-alkynyl-substituted 6H-1,2-oxazines 8 and 9 have been prepared in good yields via cross coupling reactions of halogenated precursors 2, which in turn are easily accessible by bromination of 6H-1,2-oxazines 1. Lewis-acid promoted
Reinhold Zimmer, Elmar Schmidt, Michal Andrä, Marcel-Antoine Duhs, Igor Linder, Hans-Ulrich Reissig   +5 more
doaj   +1 more source

Recent developments in gold-catalyzed cycloaddition reactions

Beilstein Journal of Organic Chemistry, 2011
In the last years there have been extraordinary advances in the development of gold-catalyzed cycloaddition processes. In this review we will summarize some of the most remarkable examples, and present the mechanistic rational underlying the ...
Fernando López, José L. Mascareñas
doaj   +1 more source

Chemical Architecture and Applications of Nucleic Acid Derivatives Containing 1,2,3-Triazole Functionalities Synthesized via Click Chemistry

Molecules, 2012
There is considerable attention directed at chemically modifying nucleic acids with robust functional groups in order to alter their properties. Since the breakthrough of copper-assisted azide-alkyne cycloadditions (CuAAC), there have been several ...
Wei Gong, Tim Efthymiou, Jean-Paul Desaulniers   +2 more
doaj   +1 more source

Chemoselective Biohydrogenation of Alkenes in the Presence of Alkynes for the Homologation of 2‐Alkynals/3‐Alkyn‐2‐ones into 4‐Alkynals/Alkynols [PDF]

Advanced Synthesis & Catalysis, 2019
AbstractThe chemoselective hydrogenation of alkenes in the presence of alkynes is a very challenging transformation to achieve with traditional chemical methods. The development of an effective procedure to perform this transformation would enrich the tool‐kit available to organic chemists for the development of useful synthetic routes, and the ...
Colombo D., Brenna E., Gatti F. G., Ghezzi M. C., Monti D., Parmeggiani F., Tentori F.   +6 more
openaire   +3 more sources

Bioorthogonal Tools for Ethanolamine Lipids and Protein Conjugates. [PDF]

Angew Chem Int Ed Engl
An alkyne‐tagged ethanolamine analog (AlkEA) enables bioorthogonal, metabolic labeling of endogenous phosphatidylethanolamine (PE) and its protein modifications. AlkEA is incorporated into PE via the Kennedy pathway, allowing CuAAC‐based visualization of PE and affinity capture of PE‐conjugated LC3, ubiquitin, and GPI‐anchored proteins.
Cho YT, Jao CY, Xia Z, White-Mathieu BM, Salic A, Baskin JM.   +5 more
europepmc   +3 more sources