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Different electronic effects in the starting anthracene‐containing polyphenylene substrate (bottom) afford two different nanographenes under Scholl reaction conditions, namely spironanographenes (R=H) on the left and a helically arranged molecular nanographene having two orthogonal aromatic moieties linked by an octafluoroanthracene core (R=F) on the right. The different stabilities of the intermediate...
Scholl oxidation has become an essential reaction in the bottom‐up synthesis of molecular nanographenes. Herein, we describe a Scholl reaction controlled by the electronic effects on the starting substrate (1 a, b). Anthracene‐based polyphenylenes lead to spironanographenes under Scholl conditions. In contrast, an electron‐deficient anthracene substrate affords a helically arranged molecular nanographene...
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