Enforced Electronic-Donor-Acceptor Complex Formation in Water for Photochemical Cross-Coupling

Tian, Ya-Ming and Hofmann, Evamaria and Silva, Wagner and Pu, Xiang and Touraud, Didier and Gschwind, Ruth M. M. and Kunz, Werner and Koenig, Burkhard (2023) Enforced Electronic-Donor-Acceptor Complex Formation in Water for Photochemical Cross-Coupling. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 62 (17): e202218775. ISSN 1433-7851, 1521-3773

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Abstract

The amino alcohol meglumine solubilizes organic compounds in water and enforces the formation of electron donor acceptor (EDA) complexes of haloarenes with indoles, anilines, anisoles or thiols, which are not observed in organic solvents. UV-A photoinduced electron transfer within the EDA complexes induces the mesolytic cleavage of the halide ion and radical recombination of the arenes leading, after rearomatization and proton loss to C -C or C -S coupling products. Depending on the substitution pattern selective and unique cross-couplings are observed. UV and NMR measurements reveal the importance of the assembly for the photoinduced reaction. Enforced EDA aggregate formation in water allows new activation modes for organic photochemical synthesis.

Item Type: Article
Uncontrolled Keywords: CHARGE-TRANSFER EXCITATION; PERFLUOROALKYL IODIDES; DEPENDENT ENZYMES; LIGHT; MEGLUMINE; ALKYLATION; ARYLATION; DELIVERY; SULFAMERAZINE; CYCLODEXTRINS; Arylation; EDA Complex; Meglumine; Photochemistry; Water
Subjects: 500 Science > 540 Chemistry & allied sciences
Divisions: Chemistry and Pharmacy > Institut für Organische Chemie > Lehrstuhl Prof. Dr. Burkhard König
Chemistry and Pharmacy > Institut für Organische Chemie > Arbeitskreis Prof. Dr. Ruth Gschwind
Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry VI - Physical Chemistry (Solution Chemistry) > Prof. Dr. Werner Kunz
Depositing User: Dr. Gernot Deinzer
Date Deposited: 28 Feb 2024 07:49
Last Modified: 28 Feb 2024 07:49
URI: https://pred.uni-regensburg.de/id/eprint/59171

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