Modular Synthesis of Structurally Diverse Azulene-Embedded Polycyclic Aromatic Hydrocarbons by Knoevenagel-Type Condensation
Publikation: Beitrag in Fachzeitschrift › Forschungsartikel › Beigetragen › Begutachtung
Beitragende
Abstract
The research interest in azulene-embedded polycyclic aromatic hydrocarbons (PAHs) has significantly increased recently, but the lack of efficient synthetic strategies impedes the investigation of their structure-property relationships and further opto-electronic applications. Here we report a modular synthetic strategy towards diverse azulene-embedded PAHs by a tandem Suzuki coupling and base-promoted Knoevenagel-type condensation with good yields and great structural versatility, including non-alternant thiophene-rich PAHs, butterfly- or Z-shaped PAHs bearing two azulene units, and the first example of a two-azulene-embedded double [5]helicene. The structural topology, aromaticity and photophysical properties were investigated by NMR, X-ray crystallography analysis and UV/Vis absorption spectroscopy assisted by DFT calculations. This strategy provides a new platform for rapidly synthesizing unexplored non-alternant PAHs or even graphene nanoribbons with multiple azulene units.
Details
Originalsprache | Englisch |
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Aufsatznummer | e202219091 |
Seitenumfang | 8 |
Fachzeitschrift | Angewandte Chemie - International Edition |
Jahrgang | 62 |
Ausgabenummer | 21 |
Frühes Online-Datum | 6 März 2023 |
Publikationsstatus | Veröffentlicht - 15 Mai 2023 |
Peer-Review-Status | Ja |
Externe IDs
WOS | 000973473500001 |
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Schlagworte
Forschungsprofillinien der TU Dresden
ASJC Scopus Sachgebiete
Schlagwörter
- Aromaticity, Azulene, Helicenes, Polycyclic Aromatic Hydrocarbons, Structure Elucidation