Erschienen in:
European Journal of Organic Chemistry, 26 (2023) 17
Sprache:
Englisch
DOI:
10.1002/ejoc.202201164
ISSN:
1434-193X;
1099-0690
Entstehung:
Anmerkungen:
Beschreibung:
AbstractA method for the synthesis of 2‐aryl‐N‐heterocyclic dimers via a cross‐dehydrogenative homocoupling (homo‐CDC) has been developed using commercially available Ruthenium on charcoal as catalyst and iron trichloride as oxidant. A large variety of heterocyclic scaffolds and functional groups are tolerated and a complete regioselectivity resulting from the activation of the less sterically hindered C−H bonds was observed for meta‐substituted substrates. Starting from several homocoupling products obtained, a series of pyridine‐borane complexes was synthesized and the impact of the dimerization on their photophysical properties was studied and rationalized using theoretical calculations.