Format:
Online-Ressource
ISSN:
1521-3935
Content:
Abstract: The present study demonstrates the polymerization of ketenes by using lanthanoid isopropoxide as a novel initiator to produce a polyester of high molecular weight. This is the first example of an efficient room‐temperature polymerization of ketenes. As a result of model reactions, it is indicated that the β‐lactone type ketene cyclic dimer does not participate in the polyester formation from the ketene monomer with lanthanoid alkoxides, and that the alternating repetition of O‐acylation of the La ketone‐enolate and C‐acylation of the La ester‐enolate is the most likely mechanism.
In:
volume:199
In:
number:8
In:
year:1998
In:
pages:1651-1655
In:
extent:5
In:
Macromolecular chemistry and physics, Weinheim : Wiley-VCH, 1947-, 199, Heft 8 (1998), 1651-1655 (gesamt 5), 1521-3935
Language:
English
DOI:
10.1002/(SICI)1521-3935(19980801)199:8〈1651::AID-MACP1651〉3.0.CO;2-5
URN:
urn:nbn:de:101:1-2024010404370978953200
URL:
https://doi.org/10.1002/(SICI)1521-3935(19980801)199:8〈1651::AID-MACP1651〉3.0.CO;2-5
URL:
https://nbn-resolving.org/urn:nbn:de:101:1-2024010404370978953200
URL:
https://d-nb.info/1315013827/34
URL:
https://doi.org/10.1002/(SICI)1521-3935(19980801)199:8〈1651::AID-MACP1651〉3.0.CO;2-5
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