Chain transfer during the aqueous ring-opening metathesis polymerization of 7-oxanorbornene derivatives

Autor:	Marcia B. France, Robert H. Grubbs, Dominic V. McGrath, Rocco A. Paciello
Rok vydání:	1993
Předmět:	Polymers and Plastics Organic Chemistry Chain transfer ROMP Metathesis Ring-opening polymerization Inorganic Chemistry chemistry.chemical_compound chemistry Polymerization Polymer chemistry Materials Chemistry Ring-opening metathesis polymerisation Methyl acrylate Acyclic diene metathesis
Zdroj:	Macromolecules. 26:4742-4747
ISSN:	1520-5835 0024-9297
DOI:	10.1021/ma00070a002
Popis:	Ring-opening metathesis polymerization (ROMP) of exo,exo-5,6-bis(methoxymethyl)-1-oxabicyclo[2.2.1]hept-2-ene (3) catalyzed by Ru II (H 2 O) 6 (tos) 2 (tos= p-toluenesulfonate) (1) in the presence of terminal acyclic olefins such as 3-buten-1-ol and methyl acrylate affords low molecular weight polymeric materials. Analysis of these oligomer samples by one- and two-dimensional 1 H NMR spectroscopy identifies them as resulting from a true metathesis chain transfer mechanism. These data and the identification of the ring-opened monomer units with alkylidene end groups corresponding to the acyclic chain transfer agent by high resolution mass spectrometry confirm this study as the first example of metathesis of an acyclic olefin by 1
Databáze:	OpenAIRE
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