Recommanded Product: 19481-82-4. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 2-Bromopropanenitrile, is researched, Molecular C3H4BrN, CAS is 19481-82-4, about Controlled radical polymerization of 2,3-epithiopropyl methacrylate. Author is Tebaldi de Sordi, Marli Luiza; Ceschi, Marco Antonio; Petzhold, Cesar Liberato; Muller, Axel H. E..
We report first results on the controlled radical polymerization of 2,3-epithiopropyl methacrylate (ETMA) also known as thiiran-2-ylmethyl methacrylate. Reversible addition-fragmentation chain transfer (RAFT) of ETMA was carried out in bulk and in solution, using AIBN as initiator and the chain transfer agents: cyanopropyl dithiobenzoate (CPDB) and cumyl dithiobenzoate (CDB). A linear increase of the number-average mol. weight and decrease of the polydispersity with monomer conversion were observed using CPDB as transfer agent, indicating a controlled process. Atom transfer radical polymerization (ATRP) of ETMA was performed under different reaction conditions using copper bromide complexed by tertiary amine ligands and Et 2-bromoisobutyrate (EBiB) or 2-bromopropionitrile (BPN) as initiator. All experiments lead to a crosslinked polymer. Preliminary studies in the absence of initiator showed that the CuBr/ligand complex alone initiates the ring-opening polymerization of thiirane leading to a poly(propylene sulfide) with pendant methacrylate groups.
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