Results 1 to 10 of about 8,786 (262)
Gold Mono- and Bis-N-heterocyclic Carbenes Based on mRNA cap0 [PDF]
ACS OmegaEukaryotic mRNA contains a cap structure which consists of a methylated guanosine (mRNA cap0) connected to the first transcribed nucleotide by an unusual 5′-5′-triphosphate bridge.
Giulia Francescato +2 more
doaj +3 more sources
Beilstein Journal of Organic Chemistry, 2015 The N-heterocyclic carbenes (NHC) now hold a preferred-ligand status in organic and organometallic chemistry. Their role in catalysis continues to grow. When the editorial staff at the Beilstein Journal of Organic Chemistry contacted me to act as a guest editor for the thematic series “N-Heterocyclic carbenes”, I was more than happy to accept what ...
Steven P. Nolan
doaj +3 more sources
Photoactive Neutral Three-Coordinate Cu(I) Complexes of Anionic N‑Heterocyclic Carbenes [PDF]
JACS AuLars E. Burmeister +8 more
doaj +2 more sources
Oxidative N‐Heterocyclic Carbene Catalysis
Chemistry – A European Journal, 2022 AbstractN‐Heterocyclic carbene (NHC) catalysis is a by now consolidated organocatalytic platform for a number of synthetic (asymmetric) transformations via diverse reaction modes/intermediates. In addition to the typical umpolung processes involving acyl anion/homoenolate equivalent species, implementation of protocols under oxidative conditions ...
Carmela De Risi +5 more
openaire +2 more sources
Nature Communications, 2022 Conformational isomerization of organic molecules can be guided by noncovalent interactions. Here, the authors report the synthesis of chiral sulfoxides catalyzed by N-heterocyclic carbenes; intramolecular chalcogen bonding interactions are key for ...
Jianjian Liu +4 more
doaj +1 more source
Communications Chemistry, 2022 N-heterocyclic carbenes are widely exploited as ligands in transition metal catalysis, but are largely limited to N-arylimidazolylidenes. Here, the authors report on the steric and electronic properties of thiazol-2-ylidenes, demonstrating that their ...
Jin Zhang +10 more
doaj +1 more source
N‐Heterocyclic Carbene Organocatalysis: With or Without Carbenes?
Chemistry – A European Journal, 2020 AbstractIn this work the mechanism of the aldehyde umpolung reactions, catalyzed by azolium cations in the presence of bases, was studied through computational methods. Next to the mechanism established by Breslow in the 1950s that takes effect through the formation of a free carbene, we have suggested that these processes can follow a concerted ...
Sascha Gehrke, Oldamur Hollóczki
openaire +2 more sources
New phosphorus-containing polycycles with a spiroamine group
Журнал органічної та фармацевтичної хімії, 2022 Aim. To synthesize hexahydrospiro[cyclopropane-1,10’-pyrido[1,2-c]quinazoline] and 2-λ5-benzo[f][1,4,2]diazaphosphepine derivatives – new N-P containing heterocyclic compounds with the 6-azaspiro[2.5]octane fragment. Results and discussion. A new analog
Grygorii M. Koidan +3 more
doaj +1 more source
Synthesis of New Organoselenium Compounds: Characterization and Biological Studies
Macedonian Journal of Chemistry and Chemical Engineering, 2020 Two new organoselenium analogs, (3,3'-(1,2-phenylenebis(methylene))bis(2-selenoxo-2,3-dihydro-1H-imidazole-3,1-diyl))bis(methylene) dibenzoate (III) and 3,3'-(1,2-phenylenebis(methylene))bis(1-benzyl-1H-imidazole-2(3H)-selenone) (V), were derived from ...
Nimra Naz +4 more
doaj +1 more source