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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...
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