A metal-free heterogeneous photocatalyst for the selective oxidative cleavage of CC bonds in aryl olefins via harvesting direct solar energy

Selective cleavage of CC bonds is highly important for the synthesis of carbonyl containing fine chemicals and pharmaceuticals. Novel methodologies such as ozonolysis reactions, Lemieux–Johnson oxidation reaction etc . already exist. Parallel to these, catalytic methods using homogeneous catalysts...

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Veröffentlicht in:Green chemistry : an international journal and green chemistry resource : GC 2020-01, Vol.22 (14), p.4516-4522
Hauptverfasser: Zhang, Yu, Hatami, Nareh, Lange, Niklas Simon, Ronge, Emanuel, Schilling, Waldemar, Jooss, Christian, Das, Shoubhik
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container_issue 14
container_start_page 4516
container_title Green chemistry : an international journal and green chemistry resource : GC
container_volume 22
creator Zhang, Yu
Hatami, Nareh
Lange, Niklas Simon
Ronge, Emanuel
Schilling, Waldemar
Jooss, Christian
Das, Shoubhik
description Selective cleavage of CC bonds is highly important for the synthesis of carbonyl containing fine chemicals and pharmaceuticals. Novel methodologies such as ozonolysis reactions, Lemieux–Johnson oxidation reaction etc . already exist. Parallel to these, catalytic methods using homogeneous catalysts also have been discovered. Considering the various advantages of heterogeneous catalysts such as recyclability and stability, couple of transition metal-based heterogeneous catalysts have been applied for this reaction. However, the pharmaceutical industries prefer to use metal-free catalysts (especially transition metal-free) to avoid further leaching in the final products. This is for sure a big challenge to an organic chemist and to the pharmaceutical industries! To make this feasible, a mild and efficient protocol has been developed using polymeric carbon nitrides (PCN) as metal-free heterogeneous photocatalysts to convert various olefins into the corresponding carbonyls. Later, this catalyst has been applied in the gram scale synthesis of pharmaceutical drugs using direct solar energy. Detailed mechanistic studies revealed the actual role of oxygen, the catalyst, and the light source.
doi_str_mv 10.1039/D0GC01187H
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source Royal Society Of Chemistry Journals; Alma/SFX Local Collection
subjects Alkenes
Aromatic compounds
Carbon nitride
Carbonyl compounds
Carbonyls
Catalysts
Cleavage
Energy harvesting
Fine chemicals
Green chemistry
Leaching
Light sources
Metals
NMR
Nuclear magnetic resonance
Optimization
Oxidation
Pharmaceuticals
Photocatalysts
Recyclability
Solar energy
Transition metals
title A metal-free heterogeneous photocatalyst for the selective oxidative cleavage of CC bonds in aryl olefins via harvesting direct solar energy
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