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Title

Triple Regioselective Functionalization of Cationic [4]Helicenes via Iridium‐Catalyzed Borylation and Suzuki Cross‐Coupling Reactivity

Authors
Zinna, Francesco
Di Bari, Lorenzo
Published in Chemistry. 2022, vol. 28, no. 56, e202201853
Abstract In essentially one-pot, using Ir- and Pd-catalysis, tris(arene)-functionalized cationic [4]helicenes are synthesized with full regioselectivity and enantiospecificity starting from a trivial precursor (17 examples). This poly-addition of aryl groups improves key optical properties, that is, fluorescence quantum yields and lifetimes. Electronic circular dichroism and circularly polarized luminescence signatures are observed up to the far-red domain, in particular with additional arenes prone to aggregation.
Keywords Cationic helicenesChiroptical spectroscopyDyes and fluorophoresIrIr-catalyzed borylationLate stage functionalization
Identifiers
PMID: 35796630
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Research group Groupe Lacour
Projects
Academy of Finland: 207539
European Commission: HEL4CHIROLED
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(ISO format)
FREDERIC, Lucas Dan et al. Triple Regioselective Functionalization of Cationic [4]Helicenes via Iridium‐Catalyzed Borylation and Suzuki Cross‐Coupling Reactivity. In: Chemistry, 2022, vol. 28, n° 56, p. e202201853. doi: 10.1002/chem.202201853 https://archive-ouverte.unige.ch/unige:164195

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Deposited on : 2022-10-12

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