Abstract
To synthesize sulfur-containing π-conjugated polymers, reaction conditions for rhodium-catalyzed hydrothiolation of terminal alkynes with arenethiols are optimized in detail. Under the optimized conditions, rhodium-catalyzed hydrothiolation of terminal alkynes proceeds regio- and stereoselectively to afford the corresponding vinyl sulfides via an anti-Markovnikov and syn-addition process. Then, the rhodium-catalyzed hydrothiolation is applied to polymerization of 2,5-diethynylthiophene with benzene-1,4-dithiol, which successfully provides sulfur-containing π-conjugated polymers with excellent regio- and stereoselectivities.
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We thank Dr. Takuma Ikeda and Mr. Kouichi Kimura for their experimental support.
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Yoshimura, A., Nomoto, A. & Ogawa, A. Rhodium-catalyzed hydrothiolation of alkynes with thiols for construction of sulfur-containing π-conjugated systems. Res Chem Intermed 40, 2381–2389 (2014). https://doi.org/10.1007/s11164-014-1639-0
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DOI: https://doi.org/10.1007/s11164-014-1639-0