admet metathesis



Die acyclische Dienmetathese-Polymerisation (englisch acyclic diene metathesis), auch ADMET-Polymerisation genannt, ist eine Variante der Alkenmetathese, bei der Diolefine mit endständigen Doppelbindungen (α,ω-Diene) in einer als Stufenwachstumsreaktion ablaufenden Gleichgewichtsreaktion in Gegenwart von
Acyclic diene metathesis or 'ADMET' (distinguish from ADME) is a special type of olefin metathesis used to polymerize terminal dienes to polyenes: ADMET. The new double bonds formed can be in cis- or trans-configuration, the exact ratio depends on the monomer and catalyst structures. It is a type of step-growth,
23.09.2009 -
Intramolekulare und intermolekulare Metathese von Dienen sind Parallelreaktionen, die durch die gleichen Katalysatoren katalysiert werden. Das Verhältnis (RCM vs. ADMET), in dem sie ablaufen, hängt von konformativen Zwängen im Substrat ab und kann in gewissem Maße durch die Reaktionsführung (Wahl der
4 Acyclic Diene Metathesis (ADMET) Polymerization. Tammy A. Davidson and Kenneth B. Wagener. The George and Josephine Butler Polymer Research Laboratory, Department of Chemistry and Center for Macromolecular Science and Engineering, University of Florida, Gaines- ville, FL, U.S.A.. List of Symbols and
03.01.2011 -
Abstract. The history of and major advances in the acyclic diene metathesis (ADMET) reaction are described. Because precise branch identity and frequency can be achieved by ADMET polymerizations of symmetrical α,ω-dienes, polyethylenes with precisely spaced alkyl branches of specified length have been prepared.
The two different polymerizations are called ring opening metathesis polymerization, or ROMP, and acyclic diene metathesis polymerization, or ADMET. We'll talk about ADMET first because it's simpler, even though ROMP has been more thoroughly researched. In ADMET we start with an acyclic diene, surprise, surprise,
01.05.1991 -
Acyclic Diene Metathesis (ADMET) Polymerization. Design and. Synthesis of Unsaturated Poly(carbosi1oxane)s. D. W. Smith, Jr., and K. B. Wagener'. Department of Chemistry and Center for Macromolecular Science and Engineering,. University of Florida, Gainesuille, Florida 3261 1-2046. Received July 27, 1992; Revised

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