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Photo-Induced Ruthenium-Catalyzed C-H Arylation at Ambient Temperature.


ABSTRACT: Ambient temperature ruthenium-catalyzed C-H arylations were accomplished by visible light without additional photocatalysts. The robustness of the ruthenium-catalyzed C-H functionalization protocol was reflected by a broad range of sensitive functional groups and synthetically useful pyrazoles, triazoles and sensitive nucleosides and nucleotides, as well as multifold C-H functionalizations. Biscyclometalated ruthenium complexes were identified as the key intermediates in the photoredox ruthenium catalysis by detailed computational and experimental mechanistic analysis. Calculations suggested that the in-situ formed photoactive ruthenium species preferably underwent an inner-sphere electron transfer.

SUBMITTER: Korvorapun K 

PROVIDER: S-EPMC7589283 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature

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Photo-Induced Ruthenium-Catalyzed C-H Arylations at Ambient Temperature.

Korvorapun Korkit K   Struwe Julia J   Kuniyil Rositha R   Zangarelli Agnese A   Casnati Anna A   Waeterschoot Marjo M   Ackermann Lutz L  

Angewandte Chemie (International ed. in English) 20200817 41


Ambient temperature ruthenium-catalyzed C-H arylations were accomplished by visible light without additional photocatalysts. The robustness of the ruthenium-catalyzed C-H functionalization protocol was reflected by a broad range of sensitive functional groups and synthetically useful pyrazoles, triazoles and sensitive nucleosides and nucleotides, as well as multifold C-H functionalizations. Biscyclometalated ruthenium complexes were identified as the key intermediates in the photoredox ruthenium  ...[more]

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