キハラ ノブヒロ   Kihara Nobuhiro
  木原 伸浩
   所属   神奈川大学  理学部 化学科
   職種   教授
言語種別 英語
発行・発表の年月 1997/06
形態種別 学術雑誌
査読 査読あり
標題 Photo-induced Cationic Ring-Opening Polymerization of 2-Alkenyl-4-methylene-1,3-dioxolanes by Benzylsulfonium Salt
執筆形態 共著
掲載誌名 Macromolecules
巻・号・頁 30(11),pp.3414-3416
著者・共著者 Jaekyeung Park, Nobuhiro Kihara, Tomiki Ikeda, and Takeshi Endo
概要 Photo-induced cationic polymns. of 2-alkenyl-4-methylene-1,3-dioxolanes (I) with benzyl(4-hydroxyphenyl)methylsulfonium hexafluoroantimonate (II) are described. Although cationic polymns. of I with methanesulfonic acid at ambient temp. afforded only crosslinked polymers, the photo-induced cationic polymn. with II proceeded without crosslinking, and unsatd. polyketone having two unit structures was obtained. The ratio of the units was independent of the polymn. conditions. Terminal cation attacked the vinyl ether part of the monomer, and subsequently ring-opening isomerization gave terminal oxyallyl cation (III). Semi-empirical MO calcns. suggested that the coeff. of LUMO of III controlled the α- and γ-attack of I on III.
DOI 10.1021/MA9610222
ISSN 0024-9297