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Digitale Medien

The ionic polymerization of cyclic olefins using optically active gegen ions (1961)

Schmitt, G. J. ; Schuerch, C.

Hoboken, NJ : Wiley-Blackwell

Journal of Polymer Science 49 (1961), S. 287-296

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Details

ISSN: 0022-3832

Schlagwort(e): Chemistry ; Polymer and Materials Science

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie , Physik

Notizen: The cyclic olefins 4, 5-dihydro-2-methylfuran, indene, 1-methylcylcopentene, and αhyphen;angelica lactone were polymerized using catalyst-cocatalyst complexes of boron triflu-oride with asymmetric Lewis bases. Various conditions of temperature and dielectric constant of the media were employed but in no case was optical activity observed in the polymers produced. The stereochemistry of the addition polymerization of cyclic olefins is discussed and it is proposed that a thermodynamically preferred trans-trans addition may predominate over any asymmetric inductive effect to yield an internally compensated polymer. The anionic polymerization of 1-cyanocyclopentene is also described.

Zusätzliches Material: 1 Tab.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/pol.1961.1204915213

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