Synthesis of poly(2-methyl-3-hydroxyoctanoate) via anionic polymerization of alpha-methyl-beta-pentyl-beta-propiolactone.
Synthesis of an alpha,beta-alkyl branched polyester, i.e., poly(2-methyl-3-hydroxyoctanoate), has been accomplished via anionic polymerization of alpha-methyl-beta-pentyl-beta-propiolactone mediated by supramolecular complexes of potassium methoxide or potassium hydroxide, respectively. The structure of resulting polymers has been established by electrospray ionization multistage mass spectrometry (ESI-MSn), FT-IR, NMR, and GPC analyses. Previously proposed addition-elimination mechanism of the polymerization of beta-lactones containing alpha-hydrogen by alkoxide anion has been confirmed to operate also in the case of beta-lactone having alkyl substituents in both alpha and beta positions.
Arkin
A H
AH
Department of Chemistry, Zonguldak Karaelmas University, 67100 Zonguldak, Turkey.
Hazer
B
B
Adamus
G
G
Kowalczuk
M
M
Jedliński
Z
Z
Lenz
R W
RW
D008722:Methods; D015394:Molecular Structure; D011091:Polyesters / Q000138:chemical synthesis* / Q000737:chemistry; D011420:Propiolactone / Q000031:analogs & derivatives / Q000737:chemistry; D021241:Spectrometry, Mass, Electrospray Ionization
D011091:Polyesters; D011420:Propiolactone