Kanazawa A, Kanaoka S, Aoshima S. Concurrent cationic vinyl-addition and ring-opening copolymerization using B(C6F5)3 as a catalyst: copolymerization of vinyl ethers and isobutylene oxide via crossover propagation reactions.
J Am Chem Soc 2013;
135:9330-3. [PMID:
23742209 DOI:
10.1021/ja404616c]
[Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Alkyl vinyl ethers and isobutylene oxide were concurrently copolymerized through cationic vinyl addition and ring opening using B(C6F5)3 as a catalyst. NMR analyses and acid hydrolysis of the products demonstrated that the copolymerization successfully proceeded through crossover reactions between vinyl and cyclic monomers to yield multiblock-like copolymers. Appropriate catalyst and monomer combinations with suitable reactivities were key for copolymerization.
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