π‐Extended Polyaromatic Hydrocarbons by Sustainable Alkyne Annulations through Double C−H/N−H Activation
Gońka, Elżbieta ; Yang, Long ; Steinbock, Ralf ; Pesciaioli, Fabio ; Kuniyil, Rositha ; Ackermann, Lutz
Citable Link (URL):http://resolver.sub.uni-goettingen.de/purl?gs-1/17058
The widespread applications of substituted diketopyrrolopyrroles (DPPs) call for the development of efficient methods for their modular assembly. Herein, we present a π-expansion strategy for polyaromatic hydrocarbons (PAHs) by C-H activation in a sustainable fashion. Thus, twofold C-H/N-H activations were accomplished by versatile ruthenium(II)carboxylate catalysis, providing step-economical access to diversely decorated fluorogenic DPPs that was merged with late-stage palladium-catalyzed C-H arylation on the thus-assembled DPP motif.