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Laterally stretched polycyclic aromatic hydrocarbons: synthesis of dibenzophenanthroheptaphene and tetrabenzotriphenylenopyranthrene derivatives

Alameddine, Bassam ; Anju, Rajamohanan Sobhana ; Shetty, Suchetha ; Baig, Noorullah ; Al-Sagheer, Fakhreia ; Al-Mousawi, Saleh ; Jenny, Titus A.

In: New Journal of Chemistry, 2017, vol. 41, no. 13, p. 6025–6032

Efficient methods for the synthesis of dibenzophenanthroheptaphene (DBPH) and tetrabenzotriphenylenopyranthrene (TBTP) were developed. As a result, a series of unprecedented derivatives of DBPH (1a–c) and TBTP (2a–b) were conventionally obtained from the Scholl cyclodehydrogenation reaction of their respective tribenzopentaphene synthons. An alternative convergent synthesis of DBPH is also...