Efficient synthetic procedures for the preparation of b-trithiophenes (dithieno[2,3-b:3¢,2¢-d]thiophene) and two macrocyclic compounds, tetra[2,3-thienylene] and hexa[2,3-thienylene] bearing trimethylsilyl (TMS) groups from 2,2¢-dibromo-5,5¢-bistrimethylsilanyl[3,3¢]bithiophenyl are reported. The UV-Vis spectra property and crystal structures of these macrocyclic oligothiophenes are described.
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