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Substituent effect in anionic polymerization of β‐lactones initiated by alkali metal alkoxides
Author(s) -
Kurcok Piotr,
Matuszowicz Andrzej,
Jedliński Zbigniew,
Kricheldorf Hans R.,
Dubois Philippe,
Jérôme Robert
Publication year - 1995
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.1995.030160709
Subject(s) - substituent , polymerization , monomer , polymer chemistry , chemistry , ring opening polymerization , alkali metal , ring (chemistry) , anionic addition polymerization , polymer , organic chemistry
The influence of methyl substituent on the mechanism of the ring‐opening polymerization of β‐lactones initiated by alkali metal alkoxides is discussed. Attention has been paid to the effect of the substituent position in the monomer molecule on the ring‐opening mechanism, the 3,3‐dimethyl‐2‐oxetanone (pivalolactone), 4‐methyl‐2‐oxetanone (β‐butyrolactone) and 2‐oxetanone (β‐propiolactone) being chosen as model monomers. Moreover, it was found unexpectedly that in the case of pivalolactone polymerization, besides open‐chain polymers, cyclic oligomers are produced.