Photocatalytic CeCl 3 -Promoted C-H Alkenylation and Alkynylation of Alkanes.

Autor: Stini NA; Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, 15771, Panepistimiopolis, Athens, Greece., Gkizis PL; Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, 15771, Panepistimiopolis, Athens, Greece., Triandafillidi I; Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, 15771, Panepistimiopolis, Athens, Greece., Kokotos CG; Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, 15771, Panepistimiopolis, Athens, Greece.
Jazyk: angličtina
Zdroj: Chemistry (Weinheim an der Bergstrasse, Germany) [Chemistry] 2024 Dec 05, pp. e202404063. Date of Electronic Publication: 2024 Dec 05.
DOI: 10.1002/chem.202404063
Abstrakt: The reemerging field of photoredox catalysis offers numerous advantages towards the development of novel, sustainable and easy-to-execute organic transformations. Herein, we report a light-triggered application of cerium complexes towards the C-H alkenylation and alkynylation of alkanes. An indirect HAT-mediated photocatalytic protocol was developed, using a cerium salt (CeCl 3  ⋅ 7H 2 O) and a chlorine source (TBACl) as the catalytic system. A variety of cyclic and linear hydrocarbons were utilized, delivering the corresponding alkenylation or alkynylation products in good to high yields, displaying high regioselectivity. A series of mechanistic experiments were conducted.
(© 2024 The Author(s). Chemistry - A European Journal published by Wiley-VCH GmbH.)
Databáze: MEDLINE
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