trans -Rich Skeletal Transformation of a Cross-Conjugated Polymer via 1,4-Selective Hydrothiolation

Previous skeletal transformations of cross-conjugated polymers into linear-conjugated structures have been limited to methods involving cyclization, which form only a cis structure on the main chain. In this study, cross-conjugated polymer containing 2,3-linked 1,3-butadiene was successfully converted into a linear-conjugated polymer with cis / trans -isomeric main chains via 1,4-selective hydrothiolation, achieving up to 71% trans -selectivity. In addition, the factors influencing the regio- and stereoselectivities were examined using density functional theory calculations.

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Publication Details

Journal
ChemRxiv
Published
2026-10-27
DOI
https://doi.org/10.26434/chemrxiv.15011120/v1
Primary Topic
Advanced Polymer Synthesis and Characterization
Type
preprint

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preprint

trans -Rich Skeletal Transformation of a Cross-Conjugated Polymer via 1,4-Selective Hydrothiolation

Shinsuke Inagi, Kosuke Sato, Yuichiro Tokoro, Toshio Koizumi et al.
ChemRxiv
Advanced Polymer Synthesis and Characterization
preprint

trans -Rich Skeletal Transformation of a Cross-Conjugated Polymer via 1,4-Selective Hydrothiolation

Shinsuke Inagi, Kosuke Sato, Yuichiro Tokoro, Toshio Koizumi, Yoichiro Eriguchi, Masayuki Munemoto, Shin-Ichi Yamamoto
preprint en

Abstract

Previous skeletal transformations of cross-conjugated polymers into linear-conjugated structures have been limited to methods involving cyclization, which form only a cis structure on the main chain. In this study, cross-conjugated polymer containing 2,3-linked 1,3-butadiene was successfully converted into a linear-conjugated polymer with cis / trans -isomeric main chains via 1,4-selective hydrothiolation, achieving up to 71% trans -selectivity. In addition, the factors influencing the regio- and stereoselectivities were examined using density functional theory calculations.

ChemRxiv
University of Electro-Communications (JP), Institute of Science Tokyo (JP), Japan Ground Self-Defense Force (JP), National Defense Academy of Japan (JP)
Ministry of Defense- Japan, Japan Society for the Promotion of Science
Advanced Polymer Synthesis and Characterization
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