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Communication | Regular issue | Vol 20, No. 10, 1983, pp.1941-1943
Published online, 1st January, 1970
DOI: 10.3987/R-1983-10-1941
2,5-Di(2’-thienyl)furan and an Improved Synthesis of Alpha-Terthienyl

Jacques Kagan and Sudershan K. Arora

*Department of Chemistry, University of Illinois at Chicago, 845 West Taylor St., Chicago, IL 60607-7061, U.S.A.


The first synthesis of 2,5-di(2’-thienyl)furan was performed by oxidizing the lithium enolate of 2-acetylthiophene with cupric chloride, to 1,4-di(2’-thienyl)1,4-butanedione. This product was dehydrated with acetic anhydride in the presence of hydrogen chloride, to give the title compound in 74% overall yield. The same route provided a most convenient synthesis for alpha-terthienyl, which was obtained in 73% yield from 2-acetylthiophene.