Synthesis and Properties of Ethene-Bridged Terthiophenes

Koichi Mitsudo; Hidehiko Sato; Arata Yamasaki; Natsuyo Kamimoto; Jun Goto; Hiroki Mandai; Seiji Suga

doi:10.1021/acs.orglett.5b02417

Synthesis and Properties of Ethene-Bridged Terthiophenes

Org Lett. 2015 Oct 2;17(19):4858-61. doi: 10.1021/acs.orglett.5b02417.

Authors

Koichi Mitsudo¹, Hidehiko Sato¹, Arata Yamasaki¹, Natsuyo Kamimoto¹, Jun Goto¹, Hiroki Mandai¹, Seiji Suga^{1

2

3}

Affiliations

¹ Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University , 3-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan.
² Research Center of New Functional Materials for Energy Production, Storage and Transport, Okayama University , 3-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan.
³ JST, ACT-C, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan.

PMID: 26381709
DOI: 10.1021/acs.orglett.5b02417

Abstract

A method for the facile synthesis of ethene-bridged terthiophenes (EBTTs) in two steps has been developed. The first step is a double Sonogashira coupling between 3',4'-dibromo-2,2':5',2″-terthiophene and terminal alkynes to give dialkynylated terthiophenes, and the second step is a cyclization reaction to afford EBTTs. The fundamental physical properties of EBTTs were also studied.