4,4″-Dimercapto-o-terphenyl as a precursor of macrocyclic compounds was prepared from o-terphenyl by chlorosulfonation and reduction. Eight macrocycles having sulfide moieties were synthesized from 4,4″-dimercapto-o-terphenyl. The thioethynyl compound, derived from 4,4″-dimercapto-o-terphenyl by introduction vinyl group and by addition of Br2 following dehydrobromination, gave a novel cumulene upon treatment with cupric acetate in THF/pyridine. The structures of macrocyclic products were determined by 1H and 13C NMR, IR, and mass spectroscopies, elemental analysis, and X-ray crystallographic analysis. UV–vis and fluorescence spectra, and cyclic voltammogram, were also acquired.