Synthesis of. alpha.-thiophene oligomers via 1, 3-butadiynes

J Kagan, SK Arora

Index: Kagan, Jacques; Arora, Sudershan K. Journal of Organic Chemistry, 1983 , vol. 48, # 23 p. 4317 - 4320

Full Text: HTML

Citation Number: 72

Abstract

Individual oligomers possessing thiophenes linked by their 2-and 5-positions are conveniently prepared via 1, 3-butadiynes. These can be prepared in good yield by the Glaser symmetrical coupling of thienylacetylenes. Following the cyclization of the 1, 3- butadiyne unit into a thiophene with sodium sulfide, an oligomer possessing an odd number of thiophene rings is obtained. Oligomers with an even number of rings are accessible ...