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Catalytic aerobic phenolhomo- and cross-coupling reactions with copper complexes bearing redox-active guanidine ligands

Due to their large importance in synthetic chemistry, catalytic C−C coupling reactions of phenols are currently intensively studied. Herein, new copper catalysts for the C−C coupling reaction of phenols using dioxygen as a green oxidizing reagent are reported. By using redox-active guanidine ligands...

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Bibliographic Details
Main Authors: Schön, Florian (Author) , Kaifer, Elisabeth (Author) , Himmel, Hans-Jörg (Author)
Format: Article (Journal)
Language:English
Published: 09 April 2019
In: Chemistry - a European journal
Year: 2019, Volume: 25, Issue: 35, Pages: 8279-8288
ISSN:1521-3765
DOI:10.1002/chem.201900583
Online Access:Verlag, Volltext: https://doi.org/10.1002/chem.201900583
Verlag: https://onlinelibrary.wiley.com/doi/abs/10.1002/chem.201900583
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Author Notes:Florian Schön, Elisabeth Kaifer, and Hans-Jörg Himmel
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Summary:Due to their large importance in synthetic chemistry, catalytic C−C coupling reactions of phenols are currently intensively studied. Herein, new copper catalysts for the C−C coupling reaction of phenols using dioxygen as a green oxidizing reagent are reported. By using redox-active guanidine ligands, the activity as well as chemoselectivity in the cross-coupling reaction of non-complementary phenols (between an electron-rich phenol and a less nucleophilic second phenol) is significantly improved. Based on the collected data for several test reactions, a reaction mechanism is proposed.
Item Description:Gesehen am 08.11.2019
Physical Description:Online Resource
ISSN:1521-3765
DOI:10.1002/chem.201900583

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