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Cyclic seven‐membered vinyl acetals – investigation on synthesis and polymerization
Author(s) -
Reina Susana Fernández,
Klemm Elisabeth
Publication year - 1998
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/(sici)1521-3935(19980401)199:4<563::aid-macp563>3.0.co;2-1
Subject(s) - cationic polymerization , polymerization , polymer chemistry , chemistry , aldehyde , ether , ketone , vinyl ether , ionic polymerization , ring opening polymerization , nitroxide mediated radical polymerization , radical polymerization , organic chemistry , catalysis , copolymer , polymer
Synthesis of the 2‐phenyl‐substituted 4‐methylene‐1,3‐dioxepanes 3a and 3b in two steps and their polymerization are described. Photoinitiated cationic polymerization under ambient conditions and radical polymerization with AIBN or DBPO at elevated temperature in bulk lead to quantitative ring‐opening and give high‐molecular weight poly(alkylene‐ether‐ketone)s. The detection of aldehyde after purification indicates that 3a and 3b polymerize with the elimination of aldehyde. A volume shrinkage of about 3% is found (after purification).