Eco-friendly synthesis of ionic helical polymers and their chemical properties and reactivity.

ABSTRACT: Reaction of N-(2,4-dinitrophenyl)pyridinium chloride (salt(Cl^-)) with sodium dicyanamide (Na(CN)₂N) resulted in anion exchange between Cl^- and (CN)₂N^- to yield a new Zincke salt, salt((CN)₂N^-). Reactions of salt((CN)₂N^-) with piperazine, specifically (R)-(-)- or (S)-(+)-2-methylpiperazine under eco-friendly conditions, such as in aqueous solution, in the absence of a catalyst, and at room temperature, resulted in pyridinium ring opening to yield ionic high-molecular-weight polymers with 5-2,4-dienylideneammonium dicyanamide units or chiral 5-(2-methylpiperazinium)-2,4-dienylideneammonium dicyanamide units, namely, polymer(H;(CN)₂N^-), polymer(R

SUBMITTER: Yamaguchi I 

PROVIDER: S-EPMC9085401 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature