Results 81 to 90 of about 4,438 (202)

Photoredox-catalyzed branch-selective pyridylation of alkenes for the expedient synthesis of Triprolidine

open access: yesNature Communications, 2019
Alkenylpyridines are versatile building blocks for the synthesis of drugs and other complex molecular structures. Here, the authors show a branch-selective pyridylation of alkenes via sulfinate-assisted photoredox catalysis and showcase its utility in an
Shengqing Zhu   +4 more
doaj   +1 more source

2,3‐Dichloro‐5,6‐Dicyano‐1,4‐Benzoquinone (DDQ)‐Mediated CC Bond Formation: Redox Strategies from Stoichiometric to Catalytic Systems

open access: yesChemistryOpen, EarlyView.
2,3‐Dichloro‐5,6‐dicyano‐1,4‐benzoquinone serves as a versatile oxidant and redox catalyst for CC bond formation through hydride abstraction or single‐electron transfer. Stoichiometric and catalytic systems enable benzylic, allylic, and aromatic CH activation under mild, metal‐free conditions, providing sustainable routes to complex and bioactive ...
Dohoon Cha, Sun‐Joon Min
wiley   +1 more source

Reduction‐Controlled Tunable Synthesis of Covellite (CuS) Nanoparticles from Water‐Soluble Single‐Source Precursors

open access: yesSmall, EarlyView.
Amino acid‐derived Cu(II)‐dithiocarbamates were synthesized as water‐soluble single‐source precursors for low‐temperature hydrothermal decomposition toward covellite (CuS) nanoparticles. Their decomposition followed a reduction‐mediated pathway via Cu(I)‐dithiocarbamate intermediates, with the reduction step being rate‐limiting and readily tunable ...
Xiang Xu   +8 more
wiley   +1 more source

A general deoxygenation approach for synthesis of ketones from aromatic carboxylic acids and alkenes

open access: yesNature Communications, 2018
Synthesis of aryl ketones can be generally achieved via C–C coupling strategies. Here, the authors show a deoxygenative coupling of carboxylic acids and alkenes enabled by photoredox catalysis and report a wide scope of products, including bioactive and ...
Muliang Zhang, Jin Xie, Chengjian Zhu
doaj   +1 more source

Going Deep into the Surface Chemistry of Carbon Dots: Influence of Functional Groups on the Redox Abilities

open access: yesSmall, EarlyView.
The chemical structure of Carbon Dots (CDs) is still a mystery despite years of study. Herein, we show how CDs with a higher density of surface‐accessible amines display enhanced (photo)redox performance. Electrochemical and thermodynamic analyses confirmed the feasibility of electron transfer, while mechanistic investigations revealed that the ...
Laura Morbiato   +6 more
wiley   +1 more source

Advances in the Different Synthetic Routes of Fluorinated Hydrazines

open access: yesThe Chemical Record, EarlyView.
This review highlights the various routes to the preparation of fluorinated hydrazines, thereby promoting the exploration of innovative methods for the synthesis of new N‐fluorinated hydrazines. Their synthesis mainly involves synthetic routes such as organometallic, organocatalytic, and photocatalytic.
Dimitra Kyrko, Benoît Crousse
wiley   +1 more source

A General Group Testing Strategy for Discovering Chemical Cooperativity

open access: yesAngewandte Chemie, Volume 138, Issue 11, 9 March 2026.
A combinatorial design theory‐based group testing strategy coupled with luminescence screening to uncover cooperative interactions in a large combinatorial space. Iterative deconvolution identifies reactive molecular pairs and enables the discovery of trifluoromethylthiolation (SCF3) reagents.
Philipp M. Pflüger   +9 more
wiley   +2 more sources

Direct Introduction of Fluorocyclopropyl Groups via Energy Transfer Catalysis

open access: yesAdvanced Synthesis &Catalysis, Volume 368, Issue 7, 1 April 2026.
This work describes an efficient, straightforward protocol for the direct incorporation of fluorinated cyclopropyl moieties via energy‐transfer catalysis. The method unlocks access to a broad range of previously inaccessible fluorocyclopropyl compounds in good yields.
Yinpeng Wang   +3 more
wiley   +1 more source

Energetics for Hydrogen Atom Transfer by Ketyl Radicals: Is Thermodynamics on Your Side?

open access: yesJournal of Physical Organic Chemistry, Volume 39, Issue 4, April 2026.
The classic hydrogen atom transfer from the 1900 Ciamician paper and its enthalpic changes illustrate ketyl thermodynamics. ABSTRACT Ketyl radicals play a key role in various reaction mechanisms, where their ability to donate hydrogen atoms governs numerous processes, ranging from photoredox catalysis to biological mechanisms and the synthesis of metal
Juan C. Scaiano
wiley   +1 more source

The Diarylprolinol Silyl Ethers: After 20 Years Still Opening New Doors in Asymmetric Catalysis

open access: yesAngewandte Chemie, Volume 138, Issue 11, 9 March 2026.
Catalysis Rules! The year 2025 marks the 20th anniversary of diarylprolinol silyl ethers in asymmetric organocatalysis. During the first decade after their discovery, these catalysts have been established as one of the most versatile tools in aminocatalysis. Although now considered mature, recent years have witnessed renewed innovation.
Enrico Marcantonio   +2 more
wiley   +2 more sources

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