Summary
Ring-opening metathesis polymerisation of cycloolefins (e.g. cyclopentene, cyclooctene, cyclododecene, dicyclopentadiene) has been investigated in the presence of recently reported catalytic systems consisting of tungsten-tetraphenylporphyrinate and aluminoxane, under inert atmosphere at room temperature, in aromatic solvents. The catalyst precursor was prepared by interaction of WCl6 with free tetraphenylporphyrin in carbon tetrachloride and characterised by spectroscopic methods. Physical-chemical studies on the interaction between the catalytic components and with the monomer, as well as kinetic results indicated a high stability and efficiency of the catalytic system employed. It is of interest that the polyalkenamers displayed a high trans stereoconfiguration and a block or alternate distribution of the carbon-carbon double bonds dyads. These catalytic systems behaved as “living” ones and allowed polyalkenamers with monomodal and narrow molecular weight distribution to be produced. Block copolymers starting from dicyclopentadiene in conjunction with cyclopentene and cyclooctene have also been obtained. Data recorded under the above conditions gave information concerning the structure of the active species, the nature of the initiation and propagation steps, reaction mechanism and stereochemistry.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
V. Dragutan, A.T. Balaban and M. Dimonie, “Olefin Metathesis and Ring-Opening Polymerization of Cycloolefins”, John Wiley, Chichester, 1985.
K.J. Ivin, “Olefin Metathesis”, Academic Press, London, 1983.
J. Kress, M. Wesolek and J.A. Osborn, J. Che. Soc., Chem. Commun. (1982) 514.
L.R. Gilliom and R.H. Grubbs, J. Am. Chem. Soc., 108 (1986) 733
R.R. Schrock, J. Feldman, C.F. Cannizzo and R.H. Grubbs, Macromolecules, 20 (1987) 1169.
R.R Schrock, Acc. Chem. Res., 23 (1990) 158
Z. Wu, D.R. Wheeler and R.H. Grubbs, J. Am. Chem. Soc, 114 (1992) 146.
R.H. Grubbs and W. Thumas, Science, 243 (1989) 907.
R.R. Schrock, R.T. DePue, J. Feldman, KB. Yap, W.M. Davies, L. Parks, M. DiMare, M. Shofield, J. Anhaus, E. Walborsky, E. Ewitt, C. Kruger and P. Batz, Organometallics, 9 (1990) 2262.
R. O’Dell, D.H. McConville, G.E. Hofmeister and R.R. Schrock, J. Am. Chem. Soc, 116 (1994) 3414.
U.S. Coca, M. Dimonie, V. Dragutan, R. Ion, L. Popescu, M. Dimonie, M. Teodorescu, F. Moise, A. Vasilescu, J. Mol. Catal. 90 (1994) 101–110.
K._J. Ivin, J. H. O’Donnell, J.J. Rooney and C.D. Stewart, Makromol. Chem., 180 (1979) 1975.
A. Cornilescu, E. Nicolescu, M. Popescu, S. Coca, C. Belloiu, M. Dimonie, M. Gheorghiu, V. Dragutan and M. Chipara, J. Mol. Catal. 28 (1985) 337.
M. Dimonie, S. Coca, M. Teodorescu and V. Dragutan, submitted for publication.
A. Cornilescu, E. Nicolescu, M. Popescu, S. Coca, C. Belloiu, C. Oprescu M. Dimonie, Gh. Hubca, V. Dragutan and M. Chipara, J. Mol. Catal., 28 (1985) 351.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1998 Springer Science+Business Media Dordrecht
About this chapter
Cite this chapter
Dragutan, V., Popescu, L., Coca, S., Dimonie, M. (1998). Ring-Opening Metathesis Polymerization of Cycloolefens Using Tungsten-Tetraphenylporphyrinate Catalysts. In: Imamoglu, Y. (eds) Metathesis Polymerization of Olefins and Polymerization of Alkynes. NATO ASI Series, vol 506. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5188-7_7
Download citation
DOI: https://doi.org/10.1007/978-94-011-5188-7_7
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-6183-4
Online ISBN: 978-94-011-5188-7
eBook Packages: Springer Book Archive