Two-Step Synthesis, Structure, and Optical Features of a Double Hetero[7]helicene.

Mohamed S H Salem Ahmed Sabri Md Imrul Khalid Hiroaki SasaiShinobu Takizawa

Published in: Molecules (Basel, Switzerland) (2022)

A novel double aza-oxa[7]helicene was synthesized from the commercially available N 1 , N 4 -di(naphthalen-2-yl)benzene-1,4-diamine and p -benzoquinone in two steps. Combining the acid-mediated annulation with the electrochemical sequential reaction (oxidative coupling and dehydrative cyclization) afforded this double hetero[7]helicene. Moreover, the structural and optical features of this molecule have been studied using X-ray crystallographic analysis, and the absorption and emission behaviors were rationalized based on DFT calculations.

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