New 7-membered diazepanone alkoxyamines for nitroxide-mediated radical polymerization
| Autor: | Peter Nesvadba, Rosemarie Sift, Lucienne Bugnon |
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| Rok vydání: | 2004 |
| Předmět: |
Nitroxide mediated radical polymerization
Polymers and Plastics Polymerization Bulk polymerization Chemistry Organic Chemistry Polymer chemistry Beckmann rearrangement Radical polymerization Materials Chemistry Living polymerization Reversible addition−fragmentation chain-transfer polymerization Degree of polymerization |
| Zdroj: | Journal of Polymer Science Part A: Polymer Chemistry. 42:3332-3341 |
| ISSN: | 1099-0518 0887-624X |
| DOI: | 10.1002/pola.20200 |
| Popis: | The synthesis of new 7-membered diazepanone alkoxyamines [2,2,7,7-tetramethyl-1-(1-phenyl-ethoxy)-[1,4]diazepan-5-one (3) and 2,7-diethyl-2,3,7-trimethyl-1-(1-phenyl-ethoxy)-[1,4]diazepan-5-one (8)] through the Beckmann rearrangement of piperidin-4-one alkoxyamines was developed. Both 3 and 8 were evaluated as initiators and regulators for the nitroxide-mediated radical polymerization of styrene and n-butyl acrylate. 8, a sterically highly hindered alkoxyamine readily available as a crystalline solid, allowed the fast and controlled polymerization and preparation of polymers with low polydispersity indices (1.2–1.4) up to a degree of polymerization of about 100. © 2004 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 42: 3332–3341, 2004 |
| Databáze: | OpenAIRE |
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