Rhodium‐Catalyzed C−H Activation/Annulation of Aryl Hydroxamates with Benzothiadiazol‐Containing Acetylenes: Access to Isoquinoline‐Bridged Donor‐Acceptor Luminophores

An efficient strategy for the preparation of a novel series of benzothiadiazole‐containing isoquinoline‐bridged D‐A compounds based on Cp*Rh(III)‐catalyzed redox‐neutral annulation of N‐(pivaloyloxy)‐benzamides with 4‐ethynyl‐7‐(p‐methoxyphenyl)‐2,1,3‐benzothiadiazole as a key step followed by the installation of donor units, such as diphenylamine, carbazole, and dihydrodibenzoazepine, by aromatization and Suzuki coupling reactions, has been developed. An initial photophysical, electrochemical and DFT investigations of the selected products have been performed.