Unexpected formation of [5]helicenes from hexaarylbenzenes containing pyrrole moieties?
Organic Chemistry Frontiers Pub Date: 2017-03-23 DOI: 10.1039/C7QO00112F
Abstract
A synthetic route to hexaarylbenzenes containing up to six pyrrole units was developed. These pyrrole moieties are connected to the central benzene core via their β-carbon atom. Oxidative cyclodehydrogenation of systems containing one pyrrole ring led to the formation of [5]helicenes instead of the completely fused coronene-like structure.
![Graphical abstract: Unexpected formation of [5]helicenes from hexaarylbenzenes containing pyrrole moieties](http://scimg.chem960.com/usr/1/C7QO00112F.jpg)
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Journal Name：Organic Chemistry Frontiers
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CAS no.: 89640-58-4
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