Introduction of chlorine into polydienes with a high content of vinyl units

Synthesis of Diverse Well-Defined Functional Polymers Based on Hydrozirconation and Subsequent Anti-Markovnikov Halogenation of 1,2-Polybutadiene

“…Introduction of halogen onto polymers, especially primary halogen groups (in favor of substitution than elimination), would be an excellent choice for subsequent transformation of halogens into diverse functional moieties via substitution reaction. Classical hydrohalogenation by hydrogen halides usually shows limited control over anti-Markovnikov halogenation although it has been applied industrially for rubber materials . Hydrozirconation and later halogenolysis are highly efficient for halogenation of alkene/alkyne in anti-Markovnikov form (high reaction rate and mild condition compared to electrophilic addition reaction with hazardous hydrohalide , ).…”

“…Classical hydrohalogenation by hydrogen halides usually shows limited control over anti-Markovnikov halogenation although it has been applied industrially for rubber materials. 16 Hydrozirconation and later halogenolysis are highly efficient for halogenation of alkene/ alkyne in anti-Markovnikov form (high reaction rate and mild condition compared to electrophilic addition reaction with hazardous hydrohalide 17,18 ). However, hydrozirconation of macromolecules with unsaturated carbon−carbon bond in the backbone or pendent chains is rarely reported to our best knowledge.…”