ArticleAngewandte Chemie (International ed. in English)2026
Stereoselective Ring-Opening Polymerization of Racemic Dithiolactones Assisted by Non-Classical C─H⋯X Interactions.
Article in Angewandte Chemie (International ed. in English), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Stereoselective polymerization offers a powerful route to the synthesis of high-performance recyclable polymers, yet achieving rapid, controlled, and stereoselective chain growth remains challenging. Here, we introduce a catalytic system that is consistent with non-classical C─H⋯X (X = O, S) hydrogen-bonding interactions, in which a bulky quaternary ammonium cation creates a confined environment that orients both the monomer and the propagating chain end through weak yet directional interactions, thereby promoting highly stereoselective ring opening. This system enables ultrafast and stereoselective ring-opening polymerization of chemically recyclable rac-dithiolactones in dichloromethane (DCM), yielding fully recyclable, stereoregular polythioesters (P
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