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Living ring-opening polymerization of lactones using cationic zirconocene complex catalysts

✍ Scribed by Michiya Hayakawa; Makoto Mitani; Tohru Yamada; Teruaki Mukaiyama

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
537 KB
Volume
198
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

Living cationic ring‐opening polymerization of ϵ‐caprolactone (CL), δ‐valerolactone (VL) and 1,3‐dioxepane‐2‐one (6) was achieved at room temperature by using zirconocene borate complex catalysts. Respective block copolymerization of CL with VL or with cyclic carbonate 6 was also successfully performed. The mechanism of the present cationic living polymerization is discussed.

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