These are preliminary reports that have not been peer-reviewed. They should not be regarded as conclusive, guide clinical practice/health-related behavior, or be reported in news media as established information. For more information, please see our FAQs.
π-Extended Helical Nanographenes: Synthesis and Photophysical Properties of Naphtho[1,2-a]pyrenes
preprintsubmitted on 08.09.2020, 23:42 and posted on 09.09.2020, 10:00 by Paban Sitaula, Ryan Malone, Giovanna Longhi, Sergio Abbate, Eva Gualtieri, Andrea Lucotti, Matteo Tommasini, Roberta Franzini, Claudio Villani, Vincent J. Catalano, Wesley Chalifoux
A mild and efficient synthesis of a broad scope of substituted naphtho[1,2-a]pyrene derivatives was accomplished in good yields using an InCl3/AgNTf2-mediated two-fold alkyne benzannulation reaction. HPLC enantiomeric separation was achieved and the interconversion barriers have been determined. The ECD spectra of two derivatives were recorded and interpreted through TD-DFT calculations. Raman spectra were also recorded and predicted through DFT calculations.