Results 21 to 30 of about 6,752 (176)
Iodine-catalyzed diazo activation to access radical reactivity
Nature Communications, 2018 Radical reactivity of diazo compounds, useful organic building blocks, is yet underexplored. Here, the authors report an iodine-catalyzed radical activation of diazo compounds affording a variety of substituted cyclopropanes, pyrroles and epoxides under ...
Pan Li +5 more
doaj +1 more source
Copper-catalyzed intermolecular formal (5 + 1) annulation of 1,5-diynes with 1,2,5-oxadiazoles
Communications Chemistry, 2023 One-carbon homologation reactions based on one-carbon insertion into the N−O bond of heterocycles have received tremendous interest over the past decades.
Can-Ming Chen +6 more
doaj +1 more source
Bis(silylene)‐Mediated N═N Bond Scission of Diazo Compounds
Angewandte Chemie, EarlyView.The carborane‐based bis(silylene) enables unprecedented N═N bond scission in diazodiarylmethanes. While xanthene‐ and aniline‐based scaffolds promote end‐on addition with partial N═N activation, the carborane‐based variant uniquely achieves complete N═N bond scission of Ar2C═N═N compounds, resulting in isolable disilicon nitride imino species.
Yun Xiong, Shenglai Yao, Matthias Driess
wiley +2 more sources
Synthesis and Antibacterial Activity of Some New Phenothiazine Derivatives
E-Journal of Chemistry, 2007 A series of some new phenothiazine derivatives were synthesized with the objective for evaluation as antimicrobials. The title compounds were prepared by a five step synthesis scheme.
Pawan Kumar Swarnkar +3 more
doaj +1 more source
Chemistry Proceedings, 2022 The data obtained by the authors in the field of carbon cluster chemistry, namely, the catalytic cycloaddition of diazo compounds of modern pharmacologically significant and natural compounds to C60-fullerene under the action of complex Pd–catalysts, are
Liliya L. Khuzina +2 more
doaj +1 more source
Copper-Catalyzed Oxyvinylation of Diazo Compounds [PDF]
Organic Letters, 2020 A copper(I)-catalyzed vinylation of diazo compounds with vinylbenziodoxolone reagents (VBX) as partners is reported. The transformation tolerates diverse functionalities on both reagents delivering polyfunctionalized vinylated products. The strategy was successfully extended to a three-component/intermolecular version with alcohols.
Guillaume Pisella +2 more
openaire +2 more sources
Angewandte Chemie, EarlyView.It may seem counterintuitive to first target a ruthenium alkylidyne when Grubbs‐type ruthenium carbene complexes are the actual goal. In the end, however, this tactic pays valuable dividends in terms of practicality, atom economy, flexibility as well as safety: the new route provides ready access to a large assortment of catalysts for alkene metathesis
Mingxu Cui, Alois Fürstner
wiley +2 more sources
Angewandte Chemie, EarlyView.Photocatalytic cross‐coupling: A redox‐neutral photochemical method enables direct C(sp2)─C(sp2) bond formation between phenols and heteroaryl halides using an organic dye and base. Complementary radical generation allows efficient cross‐coupling in up to 91% yield. Mechanistic studies, DFT, HTE, and machine learning rationalize and predict reactivity,
Matthew C. Carson +4 more
wiley +2 more sources
Asymmetric formal C–C bond insertion into aldehydes via copper-catalyzed diyne cyclization
Nature Communications, 2023 The formal C–C bond insertion into aldehydes is an attractive methodology for the assembly of homologated carbonyl compounds. However, the homologation of aldehydes has been limited to diazo approach and the enantioselective reaction was rarely developed.
Cui-Ting Li +6 more
doaj +1 more source
Synthesis and Antibacterial Activity of bis Heterocyclic Derivatives of 1,3,4-thiadiazole
Iraqi Journal of Pharmaceutical Sciences, 2017 The Chemistry of heterocyclic sulphur and nitrogen containing compounds have a great role in the field of scientific studies, The 2-amino 5-mercapto-1,3,4-thiadiazole ring for instance, has gained more importance in recent years because they are ...
Ahlam A. Al-jubouri +1 more
doaj +3 more sources