A number of derivatives of α-terthienyl were prepared including a series of naturally occurring compounds. A description of the syntheses of some new compounds, including 5- iodo, 5, 5'-diiodo, 5, 5'-diformyl, 5.5'-di-tert butyl, 5,-tert-butyl, 5-tert-butoxy, 5-trimethylsilyl, 5- thiomethyl, 5, 5-dithiomethyl and 5-carboxyl-5-(trimethylsilyl)-2, 2': 5', 2'-terthienyl is also given. An analysis of the 1H NMR data of the derivatives is presented.