The palladium catalyzed synthesis of 14-phenylbenzo[f]tetraphene-9-carbonitrile derivatives as core polycyclic aromatic hydrocarbons (PAHs) was achieved via an intramolecular annulation and decyanogenative C-H bond alkenylation strategy. A readily synthesized Knoevenagel condensation product of [1,1′-biphenyl]-2,2′-dicarbaldehyde with benzyl cyanide converted successfully into 14-phenylbenzo[f]tetraphene-9-carbonitrile derivatives in excellent yields up to 94%. The transformation involves an intramolecular cascade C-C bond formation along with a C-H bond cleavage sequence.
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Organic Chemistry