Facile synthesis of [1] benzothieno [3, 2-b] benzothiophene from o-dihalostilbenes

…, T Yamamoto, I Osaka, E Miyazaki, K Takimiya…

Index: Saito, Masahiko; Yamamoto, Tatsuya; Osaka, Itaru; Miyazaki, Eigo; Takimiya, Kazuo; Kuwabara, Hirokazu; Ikeda, Masaaki Tetrahedron Letters, 2010 , vol. 51, # 40 p. 5277 - 5280

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Citation Number: 14

Abstract

A convenient one-pot synthesis of [1] benzothieno [3, 2-b] benzothiophene from readily available o-dihalostilbenes using combined reagents of sodium sulfide nonahydrate (Na2S· 9H2O) or sodium hydrosulfide hydrate (NaSH· nH2O) and sulfur is described along with plausible reaction paths in this intriguing reaction.