Preparation of 4, 7-Dibromobenzo [b] thiophene as a Versatile Building Block and Synthetic Application to a Bis (ethynylthienyl) oligoarene System

T Yamamoto, H Katsuta, K Toyota, T Iwamoto…

Index: Yamamoto, Takuya; Katsuta, Hiroshi; Toyota, Kozo; Iwamoto, Takeaki; Morita, Noboru Bulletin of the Chemical Society of Japan, 2012 , vol. 85, # 5 p. 613 - 623

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Citation Number: 5

Abstract

Benzo [b] thiophene, 4, 7-dibromobenzo [b] thiophene, thieno [3, 2-b] thiophene, and 3- bromothieno [3, 2-b] thiophene were prepared by AuCl-catalyzed cyclization of (t- butylsulfanyl)(ethynyl) benzenes or (t-butylsulfanyl)(ethynyl) thiophenes. Several reactions of 4, 7-dibromobenzo [b] thiophene were investigated, including metallation and cross coupling reactions.

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