title: Synthesis of meta-Terphenyl-2,2''-diols by Anodic C-C Cross-Coupling Reactions.
abstract: The anodic C-C cross-coupling reaction is a versatile synthetic approach to symmetric and non-symmetric biphenols and arylated phenols. We herein present a metal-free electrosynthetic method that provides access to symmetric and non-symmetric meta-terphenyl-2,2''-diols in good yields and high selectivity. Symmetric derivatives can be obtained by direct electrolysis in an undivided cell. The synthesis of non-symmetric meta-terphenyl-2,2''-diols required two electrochemical steps. The reactions are easy to conduct and scalable. The method also features a broad substrate scope, and a large variety of functional groups are tolerated. The target molecules may serve as [OCO](3-) pincer ligands.
authors.affiliation: Institut für Organische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany.
authors.forename: Sebastian
authors.initials: S
authors.lastname: Lips
authors.affiliation: Institut für Organische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany.|Max Planck Graduate Center, Staudinger-Weg 9, 55128, Mainz, Germany.
authors.forename: Anton
authors.initials: A
authors.lastname: Wiebe
authors.affiliation: Institut für Organische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany.
authors.forename: Bernd
authors.initials: B
authors.lastname: Elsler
authors.affiliation: Institut für Organische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany.
authors.forename: Dieter
authors.initials: D
authors.lastname: Schollmeyer
authors.affiliation: Evonik Performance Materials GmbH, Paul-Baumann-Strasse 1, 45772, Marl, Germany.
authors.forename: Katrin M
authors.initials: KM
authors.lastname: Dyballa
authors.affiliation: Evonik Performance Materials GmbH, Paul-Baumann-Strasse 1, 45772, Marl, Germany.|Lehrstuhl für Theoretische Chemie, Ruhr-Universität Bochum, 44780, Bochum, Germany.
authors.forename: Robert
authors.initials: R
authors.lastname: Franke
authors.affiliation: Institut für Organische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany. waldvogel@uni-mainz.de.|Max Planck Graduate Center, Staudinger-Weg 9, 55128, Mainz, Germany. waldvogel@uni-mainz.de.
authors.forename: Siegfried R
authors.initials: SR
authors.lastname: Waldvogel
keywords: C−C coupling; electrochemistry; meta-terphenyl compounds; pincer ligands; protecting groups