Results 91 to 100 of about 35,108 (280)

Transition Metal‐Free Formal C─H/C─H Coupling of Arylacetamides and Sulfoxides: An Interrupted Pummerer/[2,3]‐sigmatropic Rearrangement Sequence

Angewandte Chemie, EarlyView.
A two‐step formal C─H/C─H coupling of arylacetamides with sulfoxides proceeds via the formation and rearrangement of little‐known α‐amido sulfonium salts and provides an alternative to transition metal‐catalyzed C─H activation. The protocol is showcased in a short synthesis of a dopamine D1 receptor allosteric modulator.
Shibo Zhang, Ying Xin Lou, Allya Larroza, Ben W. Joynson, Ciro Romano, David J. Procter   +5 more
wiley   +2 more sources

Purinylidene‐Based Iridium(III) Phosphors for Efficient Purple Phosphorescence and Organic Light‐Emitting Devices

Advanced Photonics Research
It is very challenging to achieve highly efficient and low roll‐off purple to deep‐blue organic light‐emitting diodes (OLEDs) due to the limited selection of suitable emitters.
Jie Yan, Yi Pan, Zhi‐Hao Qu, Zihan Xu, Kwok‐Chung Law, Dong‐Ying Zhou, Liang‐Sheng Liao, Yun Chi, Kai‐Chung Lau   +8 more
doaj   +1 more source

Low-lying electronic states of unsaturated carbenes. Comparison with methylene [PDF]

, 1978
John W. Kenney, Jack Simons, George D. Purvis, Rodney J. Bartlett   +3 more
openalex   +1 more source

Design of a novel Fischer carbene complex which can facilitate thiol mediated site-specific protein immobilization

Results in Chemistry, 2022
A novel Fischer carbene complex has been synthesized which has tuneable reactivity owing to its dual functionality to facilitate binding with peptides and proteins via thiol moiety in presence of the amine groups of abundant lysine residues.
Namrata Ray
doaj  

Reaction of Enol Ethers with Carbenes. X. Ring Opening of 2,2-Dichlorocyclopropyl Phenyl Sulfides [PDF]

, 1972
William E. Parham, Shoji Kajigaeshi, Siemen H. Groen   +2 more
openalex   +1 more source

Surface Protected Organozirconium Catalyzes C─H Alumination of Saturated Hydrocarbons

Angewandte Chemie, EarlyView.
C─H alumination of saturated aliphatic hydrocarbons is catalyzed by surface‐grafted organozirconium species, with high selectivity for the least‐hindered, terminal position, enabled by selective silylation of a small number of residual silanols in the catalyst. Exclusive mono‐alumination of methane is accomplished with more than 70 turnovers.
Sayak Banerjee, Jessica Rodriguez, Marco Mais, Frédéric A. Perras, Aaron D. Sadow   +4 more
wiley   +2 more sources

Chemie nucleophiler Carbene XIX [PDF]

, 1970
Rüdiger Walentowski, Hans‐Werner Wanzlick   +1 more
openalex   +1 more source

C(sp2)─H Bond Activation with a Heterometallic Nickel–Aluminium Complex

Angewandte Chemie, EarlyView.
Despite the prevalence of Ni/Al catalysts for pyridine C─H functionalization, mechanistic details of such systems remain scarce. Herein, we present the discovery of PCy3‐catalyzed bond‐breaking and making processes that occur in the coordination sphere of a novel Ni─Al heterometallic complex.
Joseph A. Zurakowski, Benedek Stadler, Marcus W. Drover, Mark R. Crimmin   +3 more
wiley   +2 more sources

Gold-catalyzed naphthalene functionalization

Beilstein Journal of Organic Chemistry, 2011
The complexes IPrMCl (IPr = 1,3-bis(diisopropylphenyl)imidazol-2-ylidene, M = Cu, 1a; M = Au, 1b), in the presence of one equiv of NaBAr'4 (Ar' = 3,5-bis(trifluoromethyl)phenyl), catalyze the transfer of carbene groups: C(R)CO2Et (R = H, Me) from N2C(R ...
Pedro J. Pérez, M. Mar Díaz-Requejo, Iván Rivilla   +2 more
doaj   +1 more source

Bindungsinsertion von Arseniumionen durch Freisetzung von Ringspannung

Angewandte Chemie, EarlyView.
Die Freisetzung der Ringspannung in cyclo‐Pn3‐Liganden (Pn = P, As) wird ausgenutzt, um die Insertion von Arseniumionen [R2As]+ (R = organischer Substituent) in unpolare Bindungen zu realisieren. Dieses Konzept wird genutzt, um Komplexe mit ungewöhnlichen cyclo‐Pn3AsR2‐Liganden zu erhalten.
Christoph Riesinger, Florian Meurer, Lisa Zimmermann, Luis Dütsch, Manfred Scheer   +4 more
wiley   +1 more source