Results 21 to 30 of about 116,077 (356)

Controlling alkyne reactivity by means of a copper-catalyzed radical reaction system for the synthesis of functionalized quaternary carbons

Beilstein Journal of Organic Chemistry, 2020
A terminal alkyne is one of the most useful reactants for the synthesis of alkyne and alkene derivatives. Because an alkyne undergoes addition reaction at a C–C triple bond or cross-coupling at a terminal C–H bond. Combining those reaction patterns could
Goki Hirata, Yu Yamane, Naoya Tsubaki, Reina Hara, Takashi Nishikata   +4 more
doaj   +1 more source

Copper-azide nanoparticle: a ‘catalyst-cum-reagent’ for the designing of 5-alkynyl 1,4-disubstituted triazoles

Scientific Reports, 2020
A single pot, wet chemical route has been applied for the synthesis of polymer supported copper azide, CuN3, nanoparticles (CANP). The hybrid system was used as ‘catalyst-cum-reagent’ for the azide-alkyne cyclo-addition reaction to construct triazole ...
Debkumar Nandi, Venkata K. Perla, Sarit K. Ghosh, Charmaine Arderne, Kaushik Mallick   +4 more
doaj   +1 more source

Azide-Alkyne Cycloaddition Catalyzed by a Glucose/Benedict Reagent System

Chemistry Proceedings, 2021
Benedict’s Reagent is commonly used in identifying reducing sugars through a redox process where a Cu(I) species is generated. Despite the simplicity of this reaction, this has barely been investigated as a copper (I) source for catalytic processes.
Jesús G. García Torres, Andrés F. Becerra-Buitrago, Luis Carlos García-Sánchez, Marco A. García-Eleno, M. V. Basavanag Unnamatla, Erick Cuevas-Yañez   +5 more
doaj   +1 more source

N-(2-Phenoxy-4-(3-phenoxyprop-1-ynyl)phenyl)methane Sulfonamide

Molbank, 2012
The title compound, N-(2-phenoxy-4-(3-phenoxyprop-1-ynyl)phenyl) methanesulfonamide was synthesized in high yield by Sonogashira cross coupling of N-(4-iodo-2-phenoxyphenyl)methanesulfonamide with 3-phenoxyprop-1-yne.
Shylaprasad Durgadas, Khagga Mukkanti, Sarbani Pal   +2 more
doaj   +1 more source

Crystal structure, Hirshfeld surface analysis and density functional theory study of benzyl 2-oxo-1-(prop-2-yn-1-yl)-1,2-dihydroquinoline-4-carboxylate

Acta Crystallographica Section E: Crystallographic Communications, 2021
The title molecule, C20H15NO3, adopts a Z-shaped conformation with the carboxyl group nearly coplanar with the dihydroquinoline unit. In the crystal, corrugated layers are formed by C—H...O hydrogen bonds and are stacked by C—H...π(ring) interactions ...
Younos Bouzian, Karim Chkirate, Joel T. Mague, Fares Hezam Al-Ostoot, Noureddine Hammou Ahabchane, El Mokhtar Essassi   +5 more
doaj   +1 more source

Nucleophilic and electrophilic cyclization of N-alkyne-substituted pyrrole derivatives: Synthesis of pyrrolopyrazinone, pyrrolotriazinone, and pyrrolooxazinone moieties

Beilstein Journal of Organic Chemistry, 2017
Intramolecular nucleophilic and electrophilic cyclization of N-alkyne-substituted pyrrole esters is described. Efficient routes towards the synthesis of pyrrolopyrazinone, pyrrolotriazinone and pyrrolooxazinone have been developed.
Işıl Yenice, Sinan Basceken, Metin Balci   +2 more
doaj   +1 more source

3-(3-Nitrophenyl)-1-[4-(prop-2-ynyloxy)phenyl]prop-2-en-1-one

IUCrData, 2022
The structure of the title compound, C18H13NO4, shows that the whole molecule is almost planar but with a dihedral angle between the two phenyl rings of 19.22 (5)°.
Vinaya, Yeriyur B. Basavaraju, Holalagudu A. Nagma Banu, Balakrishna Kalluraya, Hemmige S. Yathirajan, Rishik Balerao, Ray J. Butcher   +6 more
doaj   +1 more source

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
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Reactions of Tetracyclone Molybdenum Complexes with Electrophilic Alkynes: Cyclopentadienone–Alkyne Coupling and Alkyne Coordination [PDF]

Organometallics, 2017
The reactions of the complexes [Mo(CO)2(η4-C4Ph4CO)2] and [Mo(CO)3(NCMe)(η4-C4Ph4CO)] with the alkynes dimethyl acetylenedicarboxylate (DMAD; RC≡CR where R = CO2Me) and methyl propiolate (RC≡CH) have been studied. In the case of DMAD, the initial product is the green carbonyl complex [Mo(CO)(RC≡CR)(η5,σ-C4Ph4COCR═CR)] (3), in which two alkyne molecules
Adams, H., Booth, Y.K., Cook, E.S., Riley, S., Morris, M.J.   +4 more
openaire   +2 more sources

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