Thiophene-fused boracycles as photoactive analogues of diboraanthracenes†
Abstract
The construction of thiophene-fused analogues of diboraanthracenes with different aryl substituents through boron-mercury exchange followed by the nucleophilic replacement of the chlorines of dichlorodiboradithiophene 2 with Grignard reagents is reported. These diboradithiophenes exhibited unusual photophysical and electrochemical properties. They all undergo photoisomerisation, which can be traced using photophysical and 1H NMR spectroscopy studies.
- This article is part of the themed collection: Boron Chemistry in the 21st Century: From Synthetic Curiosities to Functional Molecules