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Novel Fluorophores based on Regioselective Intramolecular Friedel–Crafts Acylation of the Pyrene Ring Using Triflic Acid

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Novel Fluorophores based on Regioselective Intramolecular

Friedel–Crafts Acylation of the Pyrene Ring Using Triflic Acid

Authors

Tanguy Jousselin‐Oba, Kamal Sbargoud, Gianfranco Vaccaro, Francesco Meinardi, Abderrahim Yassar, Michel Frigoli

Publication date

2017/11/16

Journal

Chemistry–A European Journal

Volume 23 Issue 64 Pages 16184-16188 Description

The extension of the pyrene ring from dimethyl 2,2′‐(pyrene‐1,6‐diyl)dibenzoate derivatives by an intramolecular Friedel–Crafts acylation can be realized in an efficient and regioselective manner using triflic acid as proton source. Naphtho‐tetracenone derivatives are obtained in high yields at room temperature while Bis‐tetracene‐diones are prepared upon heating. Both products display interesting fluorescence properties in the visible range with quantum yields varying from 50 to 60 %.

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