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Common approaches for α‐C(sp³)−H functionalization of acetone.

Common approaches for α‐C(sp³)−H functionalization of acetone.

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Common approaches for α‐C(sp³)−H functionalization of acetone.
Synthesis of (Z)‐α,β‐unsaturated ketones.
Control experiments.
Triplet‐state energy diagram.
Plausible mechanism.
Photo‐Catalyzed Acyl Azolium Promoted Selective α‐C(sp)−H Acylation of Acetone via HAT: Access to Thermodynamically Less Favoured (Z)‐α,β‐Unsaturated Ketones
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Full-text available
  • Jan 2024
Mono α‐acylation of acetone has been achieved for the first time by reacting with bench‐stable acyl azolium salts under violet‐LED light at room temperature. The intermolecular hydrogen atom transfer (HAT) from acetone to triplet state of azolium salts under violet LED irradiation resulted in thermodynamically less favourable (Z)‐α,β‐unsaturated ke...
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Ligand‐Enabled Photoinduced Ruthenium Catalysis for Ortho‐C─O Bond Formation at Room Temperature
Article
Full-text available
  • Apr 2025
  • CHEM-EUR J
Photoinduced ruthenium‐catalyzed ortho‐benzoxylation through organophosphine ligand is unveiled. The in situ generation of the organophosphine‐ruthenium complex facilitates ligand‐to‐metal charge transfer (LMCT) under visible light, promoting the site‐selective ortho‐benzoxylation at room temperature. The broad scope of aryl, aliphatic, and heterocyclic carboxylic acids are key attractions of this methodology. EPR and UV‐Vis analysis support a LMCT process between a photoexcited organophosphine and Ru‐complex under blue‐light irradiation. Comprehensive mechanistic investigation highlights the role of light, ligands, oxidants, the LMCT process, and the unique reactivity of the directing group.
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