Results 141 to 150 of about 36,419 (269)

1,2‐Diazetidines − Structure, Synthesis, and Functionalization

European Journal of Organic Chemistry, EarlyView.
1,2‐Diazetidines are saturated four‐membered heterocycles featuring two adjacent nitrogen atoms. Despite recent advances in their synthesis and promising potential in medicinal chemistry, the chemistry of these cyclic hydrazines remains underexplored.
Stefan Roesner
wiley   +1 more source

Divergent Synthesis of Polycyclic Derivatives via Gold Catalysis

European Journal of Organic Chemistry, EarlyView.
Gold(I)‐catalyzed cycloisomerization enables the formation of complex 3D structures from simple enyne precursors. This study presents a divergent strategy to synthesize functionalized bicyclic and tricyclic scaffolds from a common alkynyl ketone.
Emilie Gentilini, Vincent Davenel, Pierre Ligonès, Jean‐Marie Fourquez, Véronique Michelet   +4 more
wiley   +1 more source

Rh(III)‐Catalyzed [4+2] Annulation of Imidazoles With α‐Diazocarbonyl Compounds: Direct Access to π‐Conjugated Imidazole‐Fused Isoquinolinone

European Journal of Organic Chemistry, EarlyView.
A Rh(III)‐catalyzed [4 + 2] annulation of 2‐aryl imidazoles/benzimidazoles with α‐diazocarbonyl compounds is developed for the synthesis of π‐conjugated imidazo/benzimidazo[2,1‐a]isoquinolinones systems. Mechanistic studies and control experiment reveal that the reaction proceeds via imidazole‐directed ortho C(sp2)–H activation, followed by carbene C–H
Ganesh P. Pawar, Duc Huy Le, Li Ching Shen, Sheng‐Cih Huang, Chung‐Ming Sun   +4 more
wiley   +1 more source

An Organometallic [2]Catenane With Pt‒(di‐NHC)‒Pt Units: A Topology‐Driven Strategy for Enhanced Phosphorescence in Discrete Aggregates

Angewandte Chemie, Volume 138, Issue 19, 4 May 2026.
The mechanically interlocked Borromean rings are stabilized by π···π stacking interactions while the [2]catenane is stabilized by solvophobic effects. While the π···π interactions in the Borromean rings lead to severe luminescence quenching, the solvophobically assembled [2]catenane effectively circumvents these interactions, simultaneously restricting
Ye Lu, Xi‐Dong Wu, Zi‐Yan Min, Lu An, Shi‐Ping Yang, F. Ekkehardt Hahn   +5 more
wiley   +2 more sources

University teaching of mass spectrometry as a key practical technique within the context of a fully integrated, spiral curriculum

Rapid Communications in Mass Spectrometry, EarlyView.
Rationale Mass spectrometry (MS) is introduced to high school students in the UK in many pre‐university course syllabi. As such, we have identified the use of MS as a key technique that should be taught practically to undergraduates from the outset of their studies.
Andrew F. Worrall, Craig D. Campbell, Megan O. Midson, Malcolm I. Stewart   +3 more
wiley   +1 more source

A Free N‐Heterocyclic Carbene and Its Metal Complex

Angewandte Chemie, Volume 138, Issue 19, 4 May 2026.
Free N‐heterocyclic carbenes (NHCs) are directly visualized on ultrathin sodium‐chloride films on gold (NaCl/Au(111)) using scanning tunneling microscopy (STM), atomic force microscopy (AFM), and density functional theory (DFT). Submolecular imaging reveals their structure and frontier orbital.
Ankita Das, Tzu‐Chao Hung, Andreas Rank, Felix Giselbrecht, Jonas Schön, Mowpriya Das, Nikos Doltsinis, Saeed Amirjalayer, Jascha Repp, Frank Glorius   +9 more
wiley   +2 more sources

Dimethyl‐, Diethyl‐, and Propylene Carbonates: An Emerging Class of Green Solvents for Organic Synthesis

The Chemical Record, EarlyView.
This review highlights recent advances in the use of organic carbonates, dimethyl carbonate (DMC), diethyl carbonate (DEC), and propylene carbonate (PC), as solvents in organic synthesis. Based on over seventy studies from the past 6 years, it shows their application in different organic reaction types, emphasizing their role in safer and more ...
Gabriela T. Quadros, Livia C. L. Valente, Thiago Barcellos, Daniela Hartwig, Laura Abenante, Eder J. Lenardão   +5 more
wiley   +1 more source

Dinuclear N-heterocyclic carbene copper(I) complexes [PDF]

, 2018
Cazin, Catherine, Nahra, Fady, Trose, Michael   +2 more
core   +2 more sources

A Neutral Linear Cobalt(I) Silylamide as a Platform for Alkyne Cyclotrimerization and an Intermediate‐Spin Imido Cobalt Complex

Zeitschrift für anorganische und allgemeine Chemie, EarlyView.
A new ly synthesized is employed in cyclotrimerisation of diphenylacetylene and platform for an imido cobalt complex. The imidocomplex is found in an intermediate‐spin state w ith an ambiguous electronic situation. Additional computational analyses hint to ananionic charge of imido complexes as a benefactor for a high‐spin state.
Andres Gonzalez, C. Gunnar Werncke
wiley   +1 more source

Anionic N‐Heterocyclic Carbene‐Based Silicon Halides with a Four‐Coordinated Silicon Atom

Zeitschrift für anorganische und allgemeine Chemie, EarlyView.
Silicon(IV) halides [{(Et3B)anIPr}SiHCl2] (4) and [{(Et3B)anIPr}SiBr3] (5) based on an anionic N‐heterocyclic carbene ligand (i.e., {(Et3B)anIPr} = (Et3B)C=C(H {N(Dipp)}2C, Dipp = 2,6‐iPr2C6H3) are reported. Silicon(IV) halides [{(Et3B)anIPr}SiHCl2] (4) and [{(Et3B)anIPr}SiBr3] (5) based on an anionic N‐heterocyclic carbene (NHC) ligand (i.e., {(Et3B ...
Henric Steffenfauseweh, Dennis Rottschäfer, Yury V. Vishnevskiy, Beate Neumann, Hans‐Georg Stammler, Rajendra S. Ghadwal   +5 more
wiley   +1 more source