Beilstein J. Org. Chem.2025,21, 1272–1305, doi:10.3762/bjoc.21.99
azulene-embedded PAHs. This approach requires a halogen-functionalized precursor and typically employs a palladium catalyst. Dou and co-workers reported a last-stage intramolecular C–H arylation of substituted indenofluorenes 61 and 62 (Scheme 10) [57]. The palladium-catalysed reaction yielded fused
regarded as extended indenofluorenes that contain only “formal azulene” subunits rather than exhibiting true azulene-like electronic properties.
Zhang and co-workers reported the synthesis C84 molecular carbon 66, which contains 10 non-benzenoid rings including four “formal azulene” units (Scheme 10) [58
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Graphical Abstract
Figure 1:
a) Stone–Wales (red) and azulene (blue) defects in graphene; b) azulene and its selected resonance ...
Beilstein J. Org. Chem.2014,10, 2122–2130, doi:10.3762/bjoc.10.219
gram amounts of material. With this new methodology, we explored the effects on crystal packing morphology for the indeno[1,2-b]fluorene-6,12-diones by varying the substituents on the silylethynyl groups.
Keywords: crystal packing; electron accepting; indenofluorenes; organic electronics; polycyclic
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Graphical Abstract
Figure 1:
Previously reported indeno[1,2-b]fluorenes and related indeno[1,2-b]fluorene-6,12-diones.