Results 31 to 40 of about 317 (127)

Mechanochemical Conditions for Intramolecular N−O Couplings via Rhodium Nitrenoids Generated from N‐Acyl Sulfonimidamides

open access: yesAngewandte Chemie, Volume 136, Issue 50, December 9, 2024.
Mechanochemical intramolecular N−O couplings of N‐acyl sulfonimidamides under rhodium catalysis are presented. The solvent‐free method proceeds via rhodium nitrenoids and produces unprecedented 1,3,2,4‐oxathiadiazole 3‐oxides in a short reaction time with up to 98 % yield.
Shulei Pan   +5 more
wiley   +2 more sources

Photocarboxylation of Arylated 2H‐Azirines Exploiting Continuous Flow Technology

open access: yesEuropean Journal of Organic Chemistry, Volume 28, Issue 18, May 23, 2025.
An efficient continuous process for the synthesis of trisubstituted oxazoles is reported which links the photochemical opening of azirines and the subsequent trapping of the azomethine ylides with CO2 gas. This highlights challenges and solutions when incorporating CO2 as a feedstock material for the photochemical synthesis of small heterocyclic ...
Arlene Bonner   +2 more
wiley   +1 more source

Continuous Flow Technology Enabling Photochemistry

open access: yesAdvanced Synthesis &Catalysis, Volume 367, Issue 9, May 6, 2025.
Abstract The merger of continuous flow technology and modern photochemistry has enabled countless applications showcasing new opportunities for chemical synthesis demonstrating improvements in selectivity, safety, sustainability and scalability. This focused review aims to highlight a selection of recently published case studies from academic and ...
Ruairi Crawford, Marcus Baumann
wiley   +1 more source

Emerging Functionalized Lindqvist‐Type Polyoxometalate‐Based Compounds: Design, Synthesis, and Applications

open access: yesChemCatChem, Volume 17, Issue 8, April 15, 2025.
We highlight the potential of Lindqvist‐type polyoxometalate (POM)‐based compounds in catalysis, energy, and environmental applications. With their compact, symmetric structures, and reactive surface oxygen atoms, these compounds excel in catalytic oxidation, adsorption/separation, energy storage, and electrocatalysis.
Ailing Gao, Tsukasa Iwano, Sayaka Uchida
wiley   +1 more source

Visible‐Light Enabled Synthesis of 1‐Aryl‐3‐Sulfonylmethyl‐1,2,4‐Triazoles by Arylazo Sulfones

open access: yesAdvanced Synthesis &Catalysis, Volume 367, Issue 6, March 18, 2025.
Abstract We present a novel and highly efficient method for synthesizing polyfunctionalized 1,2,4‐triazoles. This approach leverages visible light and arylazo sulfones in combination with N‐vinyl amides, in the environmentally friendly solvent ethyl acetate.
Luca Nicchio   +5 more
wiley   +1 more source

2H-Azirines as electrophiles

open access: yes, 2011
2H-Azirines have shown an unusual potential to synthesise aziridines and other types of compounds. Many functionalized aziridines can be produced by addition of O-, S-,N-, C-nucleophiles and hydride to 2H-azirines. This review is designed to give an overview of the reactivity of 2H-azirines as electrophiles along the years and their usefulness in the ...
Alves, M. José, Costa, Flora Teixeira e
openaire   +1 more source

Highly Enantioselective Reductions of 2H-Azirines

open access: yes
Herein, we present the first highly enantioselective reduction of mono- and tri- substituted 2H-azirines mediated by a chiral copper-hydride complex. The reaction tolerates both alkylated and arylated 2H-azirines to afford free N-H aziridines in excellent yield (up to 96%) and enantioselectivity (up to 96% ee). A key finding was the stark difference in
Yinuo Zheng   +4 more
openaire   +1 more source

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