Living Anionic Polymerization of Benzofulvene in Hydrocarbon Solvent | Zendy

Kosaka Yuki | Zendy; Goseki Raita | Zendy; Kawauchi Susumu | Zendy; Ishizone Takashi | Zendy

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Living Anionic Polymerization of Benzofulvene in Hydrocarbon Solvent

Author(s) -

Kosaka Yuki,

Goseki Raita,

Kawauchi Susumu,

Ishizone Takashi

Publication year - 2015

Publication title -

macromolecular symposia

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.257

H-Index - 76

eISSN - 1521-3900

pISSN - 1022-1360

DOI - 10.1002/masy.201400024

Subject(s) - benzene , monomer , isoprene , copolymer , polymer chemistry , polymerization , anionic addition polymerization , molar mass distribution , solvent , yield (engineering) , chemistry , hydrocarbon , materials science , organic chemistry , polymer , metallurgy

Summary Anionic polymerization of benzofulvene ( BF ) quantitatively proceeded with sec ‐BuLi in benzene at 0∼55 °C. The resulting poly( BF ) s possessed predicted molecular weights based on the molar ratios between monomer and initiator and narrow molecular weight distributions ( M w / M n < 1.1). The result of postpolymerization demonstrated that the propagating chain end anion of poly( BF ) was stable in benzene at 0 °C for at least 1 h. Anionic sequential copolymerization of isoprene and BF was also performed in benzene to afford a well‐defined polyisoprene‐ b ‐poly( BF ) in quantitative yield. The 13 C NMR analysis revealed that the poly( BF ) obtained with sec ‐BuLi in benzene at 0 °C possessed 76% of the 1,4‐structure and 24% of the 1,2‐structure.

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