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Updated: Sep 8, 2025

Constructing Thioether/Vinyl Sulfide-tethered Helical Peptides Via Photo-induced Thiol-ene/yne Hydrothiolation
Published on: August 1, 2018
Radical Reactivity of Thioimidates for Diversified Polymeric Amidines with Tunable Properties
Selin Kinali-Demirci1,2, Serkan Demirci1,2, Jacob Byerly-Duke1
1Department of Chemistry, Iowa State University, Ames, IA, 50011, USA.
Abstract:
The first reactions of thioimidates under radical-mediated conditions are described along with the delineation of structural factors that impact radical reactivity and possible side reactions. Thioimidate-containing copolymers with methylmethacrylate (MMA) are synthesized through radical-mediated, chain-growth polymerization. These materials serve as a synthetic branch point for facile conversion into amidines by treatment with a weak acid and an external amine. Our approach allows for more diverse amidine structures than have been previously reported in polymers. This chemistry also enables crosslinking to form novel hydrogels with finely tuned acid-base behavior. Subsequent examination of the acid-base properties revealed that these features are preserved across linear, soluble amidine polymers to cross-linked amidine gel polymer architectures.
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