Halogen-bond/hydrogen-bond donor hybrid catalysts for carbon dioxide fixation.

Authors

Yuki Chiba, Ryosuke Gosho, Shota Michii, Momoko Yamaoka, Yuta Murai, Hiroki Takegoshi, Kana Sakurai, Yusuke Yoshigoe, Masahiro Anada, Shunsuke Sueki, Ryosuke Haraguchi

Published in

Chemical communications (Cambridge, England). Oct 30, 2026. Epub Oct 30, 2026.

Abstract

Hydroxymethyl-functionalized iodotriazolium halides were developed as highly active catalysts for the cycloaddition of carbon dioxide to epoxides. The optimized catalyst 3j promoted the cycloaddition of CO₂ to styrene oxide at a catalyst loading of 0.1 mol % under 1 atm of CO₂, achieving a TON of 640. Control experiments support the contributions of the halogen-bond donor, hydrogen-bond donor, and nucleophilic counteranion to the catalytic activity. Catalyst 3a also promoted double and triple CO₂ cycloadditions with selected multifunctional epoxides at a catalyst loading of 15 mol % under 1 atm of CO₂.

PMID:
42961288
Bibliographic data and abstract were imported from PubMed on 30 Oct 2026.

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