Results 11 to 20 of about 830 (174)

Molybdenum Disulfide‐Based Catalysts in Organic Synthesis: State of the Art, Open Issues, and Future Perspectives [PDF]

open access: yesSmall, Volume 20, Issue 52, December 27, 2024.
In the field of heterogeneous organic catalysis, molybdenum disulfide (MoS 2 ) is gaining increasing attention as a catalytically active material due to its low toxicity, earth abundance, and affordability. Interestingly, the catalytic properties of this
Filippini, Giacomo   +3 more
core   +3 more sources

Cooperative Photometallobiocatalysis: Nonheme Fe Enzyme‐Catalyzed Enantioconvergent Radical Decarboxylative Azidation, Thiocyanation, and Isocyanation of Redox‐Active Esters [PDF]

open access: yesAngewandte Chemie, Volume 137, Issue 29, July 14, 2025.
Through the directed evolution of an underexploited nonheme Fe extradiol dioxygenase, we developed a unified cooperative photobiocatalytic strategy to allow for three types of enantioconvergent radical transformations, including azidation, thiocyanation, and isocyanation.
Liu‐Peng Zhao   +8 more
wiley   +3 more sources

Cationic Selenuranes – Bench‐Stable Sources of Se(III) Radicals [PDF]

open access: yesAngewandte Chemie, Volume 137, Issue 44, October 27, 2025.
We present the synthesis of cationic selenurane salts via oligomerization of dibenzoselenophene‐based radical cations, allowing the formation of radicals without external activation. The salts can be prepared on a multigram scale and stored as solids for more than a month at ambient conditions.
Kirill Zhiliaev   +4 more
wiley   +3 more sources

Synthesis of 4-functionalized pyrazoles via oxidative thio- or selenocyanation mediated by PhICl2 and NH4SCN/KSeCN [PDF]

open access: yesBeilstein Journal of Organic Chemistry
A series of 4-thio/seleno-cyanated pyrazoles was conveniently synthesized from 4-unsubstituted pyrazoles using NH4SCN/KSeCN as thio/selenocyanogen sources and PhICl2 as the hypervalent iodine oxidant.
Jialiang Wu   +6 more
doaj   +2 more sources

Recent Synthetic Advances in C–H/N–H Functionalization of 1H‐Pyrazoles: Diverse Strategies Across Variously Substituted Scaffolds [PDF]

open access: yesThe Chemical Record, Volume 25, Issue 12, December 2025.
Systematic overview of pyrazole functionalization reactions from C‐5 to N−H. It covers different strategies, from traditional cross‐coupling of prefunctionalized pyrazoles to more efficient direct functionalizations. This review briefly and systematically overviews C–H and N–H functionalization reactions of pyrazoles, aimed at creating new CC and C ...
Karolina Dzedulionytė Müldür   +3 more
wiley   +2 more sources

Chemically engineered essential oils prepared through thiocyanation under solvent-free conditions: chemical and bioactivity alteration [PDF]

open access: yesNatural Products and Bioprospecting
The generation of chemically engineered essential oils (CEEOs) prepared from bi-heteroatomic reactions using ammonium thiocyanate as a source of bioactive compounds is described.
Liz E. Lescano   +2 more
doaj   +2 more sources

Mechanochemical Approach for Metal‐Free Regioselective C5‐Sulfenylation of Imidazo[2,1‐b]Thiazoles [PDF]

open access: yesChemSusChem, Volume 18, Issue 16, August 6, 2025.
This study presents a mechanochemical approach for the metal‐free, regioselective C5‐sulfenylation of imidazo[2,1‐b]thiazoles using bis(trifluoroacetoxy)iodo]benzene and aryl methyl sulfides. The method, performed under solvent‐free ball‐milling conditions, provides an efficient, environmentally friendly alternative to conventional synthesis, achieving
Xinya Liu   +6 more
wiley   +2 more sources

Visible light-mediated heterodifunctionalization of alkynylazobenzenes for 2H-indazole synthesis [PDF]

open access: yesOrg Lett
We disclose the heterodifunctionalization of alkynylazobenzenes promoted exclusively by visible light in the absence of any transition metal and/or photocatalyst.
Mañas Hernández, Clara   +1 more
core   +2 more sources

Simple and quick preparation of a-thiocyanate ketones in hydroalcoholic media. Access to 5-aryl-2-imino-1,3-oxathiolanes [PDF]

open access: yes, 2009
Financial support from the Spanish Ministerio de Ciencia e Innovación (MICINN, Project CTQ2007-61126/PPQ) is gratefully ...
Bisogno Forconesi, Fabricio Román   +3 more
core   +2 more sources

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