Volume 56, Issue 17 pp. 4834-4838
Communication

Synthesis of Rationally Halogenated Buckybowls by Chemoselective Aromatic C−F Bond Activation

Olena Papaianina

Olena Papaianina

Department of Organic Chemistry, Friedrich Alexander University Erlangen-Nuremberg, Henkestrasse 42, 91054 Erlangen, Germany

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Vladimir A. Akhmetov

Vladimir A. Akhmetov

Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1–3, 119991 Moscow, Russia

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Dr. Alexey A. Goryunkov

Dr. Alexey A. Goryunkov

Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1–3, 119991 Moscow, Russia

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Dr. Frank Hampel

Dr. Frank Hampel

Department of Organic Chemistry, Friedrich Alexander University Erlangen-Nuremberg, Henkestrasse 42, 91054 Erlangen, Germany

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Dr. Frank W. Heinemann

Dr. Frank W. Heinemann

Department of Inorganic Chemistry, Friedrich Alexander University Erlangen-Nuremberg, Egerlandstrasse 1, 91058 Erlangen, Germany

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Dr. Konstantin Y. Amsharov

Corresponding Author

Dr. Konstantin Y. Amsharov

Department of Organic Chemistry, Friedrich Alexander University Erlangen-Nuremberg, Henkestrasse 42, 91054 Erlangen, Germany

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First published: 24 March 2017
Citations: 41

Graphical Abstract

Efficiency that will bowl you over: The activation of aromatic C−F bonds in the presence of more labile C−Br and C−Cl bonds enabled the fully controlled synthesis of halogenated bowl-shaped polycyclic aromatic hydrocarbons through intramolecular aryl–aryl coupling (see picture). Besides its simplicity and high reproducibility, the technique provides access to halogenated bowl-shaped systems that are not accessible by other methods.

Abstract

Halogenated buckybowls or bowl-shaped polycyclic aromatic hydrocarbons (BS-PAHs) are key building blocks for the “bottom-up” synthesis of various carbon-based nanomaterials with outstanding potential in different fields of technology. The current state of the art provides quite a limited number of synthetic pathways to BS-PAHs; moreover, none of these approaches show high selectivity and tolerance of functional groups. Herein we demonstrate an effective route to BS-PAHs that includes directed intramolecular aryl–aryl coupling through C−F bond activation. The coupling conditions were found to be completely tolerant toward aromatic C−Br and C−Cl bonds, thus allowing the facile synthesis of rationally halogenated buckybowls with an unprecedented level of selectivity. This finding opens the way to functionalized BS-PAH systems that cannot be obtained by alternative methods.

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