Journal
MACROMOLECULAR CHEMISTRY AND PHYSICS
Volume 215, Issue 17, Pages 1654-1660Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/macp.201400324
Keywords
Beckmann rearrangement; lactams; polyamides; ring-opening polymerization; terpenes
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In the context of novel sustainable and structurally significant building blocks for polymer science, the synthetic routes are described to new oligoamide structures based on the terpenoid ketone (-)-menthone. The basic concept is an oxime formation of this cyclic ketone followed by the Beckmann rearrangement, resulting in the corresponding lactams. These lactams are polymerized under anionic or acid-catalyzed conditions (ring-opening polymerization (ROP)) to give alkyl-substituted and stereocenter containing oligoamide scaffolds that are assumed to be suitable for further copolymerizations and modifications and thus for a wide range of different applications. The regio- and the stereochemistry of the formed oximes and lactams as well as their impact on the polymerization behavior is discussed.
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