Catalytic Si/B Exchange Condensation: A Green B–C Coupling Method That Provides Access to Monodisperse (Het)arylborane ‘Trimers’

Dedicated to Professor Rainer Streubel on the occasion of his 60th birthday

Abstract

The potential of our metal-free B–C coupling method using catalytic Si/B exchange condensation is demonstrated by the synthesis of a series of monodisperse (het)arylborane oligomers with four (het)arene moieties and three boron centers (i.e., ‘trimers’). Photophysical and electrochemical investigations evidenced effective π-conjugation over the (het)arene rings and the boron centers.

Key words

boron - B–C bond formation - furan - thiophene - organo­catalysis - organoboranes - monodisperse oligomers - conjugated materials

• References

• 1 These authors contributed equally to this work.

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