Online article for Non-subscribers

Pay per view

Heterocycles has a pay-per-view service for Non-subscribers.
You will be able to directly purchase the full text article through PayPal.
Your purchased Paper can be downloaded after the payment is completed.
An e-mail will be sent the URL to download the paper.
If you have any questions, please contact: purchase@heterocycles.com

Price: ¥ 4,400 (Yen only)
Period: This Article can be accessed for 7 days.

Communication | Regular issue | Vol 34, No. 8, 1992, pp.1487-1490
Published online, 1st January, 1970
DOI: 10.3987/COM-92-6027
Tetra-2-thienyl- and Tetrakis(5,2’-bithiophene-2-yl)thiophenes and Selenophenes

Juzo Nakayama,* Kanji Sawada, Akihiko Ishii, and Masamatsu Hoshino

*Department of Chemistry, Faculty of Science, Saitama University, Urawa, Saitama 338, Japan

Abstract

Heating a mixture of di-2-thienylacetylene (1) and elemental selenium in benzene at 220-225 °C for 9 h in a stainless steel autoclave affords tetra-2-thienylselenophene (2b) in 65% yield. In similar ways, heating a mixture of bis(5,2’-bithiophene-2-yl)acetylene (3) and elemental sulfur or selenium gives tetrakis-(5,2’-bithiophene-2-yl)thiophene (4a) or selenophene (4b), respectively, in satisfactory yields.