Synthesis and Characterization of Two Unsymmetrical Indenofluorene Analogues: Benzo5,6-s-indaceno1,2-bthiophene and Benzo5,6-s-indaceno2,1-bthiophene

摘要

The synthesis and characterization of two benzo-indaceno-thiophene compounds (anti-BIT and syn-BIT) are described. Two sequential Suzuki cross-couplings utilizing the halogen selectivity of this reaction permit modular assembly of unsymmetrical indeno1,2-bfluorene analogues. Analysis of their cyclic voltammetry and UV-vis spectra reveal that the optical and electrochemical properties of the BITs lie between those of indeno1,2-bfluorenes and indacenodithiophene.