Catalytic
B–C Coupling by Si/B Exchange: A
Versatile Route to π‑Conjugated Organoborane Molecules,
Oligomers, and Polymers
Posted on 2017-04-10 - 00:00
Conjugated
organoboranes have emerged as attractive hybrid materials
for optoelectronic applications. Herein, a highly efficient, environmentally
benign catalytic B–C bond formation method is presented that
uses organosilicon compounds, dibromoboranes, and the metal-free organocatalyst
Me3SiNTf2. This Si/B exchange approach has been
successfully applied to the synthesis of arylborane molecules 4a–c, oligomers 8a,b, and polymers 8a′,b′. Photophysical investigations, supported by TD-DFT calculations,
reveal highly effective π-conjugation in thienyl- and furylborane
species; the latter are also highly emissive.
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Lik, Artur; Fritze, Lars; Müller, Lars; Helten, Holger (2017). Catalytic
B–C Coupling by Si/B Exchange: A
Versatile Route to π‑Conjugated Organoborane Molecules,
Oligomers, and Polymers. ACS Publications. Collection. https://doi.org/10.1021/jacs.7b01835
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AUTHORS (4)
AL
Artur Lik
LF
Lars Fritze
LM
Lars Müller
HH
Holger Helten
KEYWORDS
CatalyticOligomerTD-DFT calculationsVersatile Routeoptoelectronic applicationsOrganoboranefurylborane speciesmetal-free organocatalystMoleculepolymers 8methodsynthesisthienylπ- conjugationmaterialemissivearylborane molecules 4Polymers Conjugated organoboranesorganosilicon compoundsapproach3 SiNTf 2HereindibromoboranePhotophysical investigationsoligomers 8formationlatterbond