Topic
Norbornene
About: Norbornene is a research topic. Over the lifetime, 5628 publications have been published within this topic receiving 104495 citations. The topic is also known as: norbornylene & norcamphene.
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TL;DR: In the presence of a palladium(0) catalyst, ketone α-carbonates react with norbornene to give a cyclopropane derivative via an oxa-π-allylpalladium intermediate as discussed by the authors.
Abstract: In the presence of a palladium(0) catalyst, ketone α-carbonates react with norbornene to give a cyclopropane derivative via an oxa-π-allylpalladium intermediate
35 citations
TL;DR: A BiCl3-catalyzed hydroamination reaction of norbornene, in which a variety of electron-withdrawing groups were tolerated on amines, was presented in this paper.
35 citations
TL;DR: In this paper, hyperbranched polymers with pendent norbornene functionalities have been synthesized via the radical polymerization of a novel asymmetrical divinyl monomer bearing a higher reactivity methacrylate group and a lower reactivity n-bornene group.
Abstract: Hyperbranched polymers with numerous pendent norbornene functionalities have been synthesized via the radical polymerization of a novel asymmetrical divinyl monomer bearing a higher reactivity methacrylate group and a lower reactivity norbornene group. Mediated by a rapid reversible addition−fragmentation chain transfer (RAFT) equilibrium, the concentration of polymeric chain radicals is decreased, and thus the gelation did not occur until higher monomer conversions (ca. 90%). An increase in reaction temperature can also significantly promote the formation of the hyperbranched structure owing to the decreased stability of the intermediate radicals derived from the norbornene group, which was confirmed by a model copolymerization system of two single vinyl monomers with similar structures to the vinyl groups in the asymmetrical divinyl monomer. Furthermore, Tri-SEC and conventional Sin-SEC as well as 1H NMR analyses show that hyperbranched structures and higher molecular weights were formed at moderate-to-...
35 citations
TL;DR: Diblock copolymers of norbornene and Sn[2,3-transbis-([tert-butylamido]methyl)norborn-5-ene]Cl 2 were prepared by ring opening metathesis polymerization using a tungstene alkylidene catalyst as discussed by the authors.
Abstract: Diblock copolymers of norbornene and Sn[2,3-trans-bis-([tert-butylamido]methyl)norborn-5-ene]Cl 2 were prepared by ring opening metathesis polymerization using a tungstene alkylidene catalyst. TEM and SAXS data showed that these copolymers exhibited spherical, cylindrical or lamellar morphology depending on their composition and molecular weight. The phase diagram compared well with the predictions of the Helfand and Wasserman theory.
35 citations
TL;DR: The oligomers of constrained cis-exo-β-norbornene amino acid were synthesized and characterised by extensive NMR, CD, IR and MD studies as discussed by the authors.
34 citations