Results 81 to 90 of about 20,886 (238)

Copper(II/III) Redox Couple Enables C─H Methylation via a Radical Mechanism Analogous to SAM Enzymes

Angewandte Chemie, EarlyView.
Biological C–H methylation proceeds through radical pathways mediated by one‐electron redox cofactors, yet no synthetic model has reproduced this reactivity. Here, we report the first isolable Cu(II/III)–methyl complexes that mediate C–H methylation through hydrogen atom transfer and methyl radical rebound.
Emily N. Doss, Curtis E. Moore, Shiyu Zhang   +2 more
wiley   +2 more sources

Bioorganometallic derivatives of 4-hydrazino-benzenesulphonamide as carbonic anhydrase inhibitors: synthesis, characterisation and biological evaluation

Journal of Enzyme Inhibition and Medicinal Chemistry, 2020
A series of bio-organometallic-hydrazones of the general formula [{(η5-C5H4)-C(R)=N–N(H)-C6H4-4-SO2NH2}]MLn(MLn = Re(CO)3, Mn(CO)3, FeCp; R=H, CH3) were prepared by reaction of formyl/acetyl organometallic precursors with 4-hydrazino-benzenesulphonamide.
Jeremie Brichet, Rodrigo Arancibia, Emanuela Berrino, Claudiu T. Supuran   +3 more
doaj   +1 more source

Silicon‐Bridged Homocyclopentadienides: Metal‐Assisted Facile Ring Expansion of Cyclopentadienide by Transient Imino(Metallophosphino)Silylenes

Angewandte Chemie, EarlyView.
We demonstrate the facile aromatic C─C bond cleavage of cyclopentadienide mediated by transient imino(metallophosphino)silylenes, enabling the transformation of an aromatic system into a homoaromatic species. The steric bulk of the phosphino substituent, together with the weak interaction between the coinage metal and the cyclopentadienide ligand, are ...
Huaiyuan Zhu, Xufang Liu, Shicheng Dong, Jun Zhu, Shigeyoshi Inoue   +4 more
wiley   +2 more sources

On the existence of collective interactions reinforcing the metal-ligand bond in organometallic compounds. [PDF]

Nat Commun, 2023
Poater J, Vermeeren P, Hamlin TA, Bickelhaupt FM, Solà M.   +4 more
europepmc   +1 more source

Scalable ω‐Substituted α‐Olefins via Living Chain Transfer Telomerization: A Platform for Next Generation Polyolefins

Angewandte Chemie, EarlyView.
A highly versatile and general strategy is presented for the scalable production of practical quantities of ω‐substituted α‐olefins using tris(ω‐substituted alkyl)aluminum telogens that are readily available through a “green” synthesis from commodity triisobutylaluminum and ethene as the taxogen. These new α‐olefins can be designed and used as monomers
Lauren G. Logue, Cole M. Burrows, Vince J. Wedekind, Hyunku C. Kim Jr., Lawrence R. Sita   +4 more
wiley   +2 more sources

Reply to: On the existence of collective interactions reinforcing the metal-ligand bond in organometallic compounds. [PDF]

Nat Commun, 2023
Šadek V, Sowlati-Hashjin S, Sadjadi S, Karttunen M, Martín-Pendás A, Foroutan-Nejad C.   +5 more
europepmc   +1 more source

N‐Alkoxysulfurdiimide Reagents for the One‐Step Modular Synthesis of Primary Sulfonimidamides

Angewandte Chemie, EarlyView.
N‐Alkoxysulfurdiimide reagents when combined with organometallic reagents lead directly to primary sulfonimidamide products. The reactions are broad in scope, encompassing aryl, heteroaryl, and alkyl carbon substituents. The reactivity of the N‐alkoxysulfurdiimide reagents can be correlated with the electron‐withdrawing ability of the N‐substituent ...
Suzanne E. Davison, Jonathan A. Andrews, Agamemnon E. Crumpton, Mireia Sidera Portela, Michael A. Clegg, Damien Valette, Michael C. Willis   +6 more
wiley   +2 more sources

Characterization of selected organometallic compounds by electrospray ionization- and matrix-assisted laser desorption/ionization-mass spectrometry using different types of instruments: Possibilities and limitations. [PDF]

Rapid Commun Mass Spectrom, 2022
Fleissner S, Pittenauer E, Pecak J, Kirchner K.   +3 more
europepmc   +1 more source

Photochemical Ring Opening of Cyclopropyl Silyl Ethers Enables β–β Coupling, Radical‐Polar Crossover and Annulation

Angewandte Chemie, EarlyView.
A photochemical platform enables β–β coupling of cyclopropyl silyl ethers with electron‐deficient alkenes. The resulting adducts serve as entry points into annulative and radical–polar crossover pathways, providing rapid access to fused, bridged, and spirocyclic architectures, including late‐stage scaffold diversification to diterpene‐like carbocyclic ...
Jacop Rydén, Eilidh Young, Wilma Olsson, Eskil Flodén, Mattias Tan, Sebastian Clementson   +5 more
wiley   +2 more sources

Zur Chemie der siliciumorganischen Verbindungen

CHIMIA, 1962
After briefly outlining the history of the chemistry of organo-silicon compounds this paper reports the formation of cyclic siliconmethylene compounds.
G. Fritz
doaj   +1 more source