Preparation and ring-opening metathesis ...



Title Preparation and ring-opening metathesis polymerizations of 5-siloxydeltacyclene and deltacyclene using the Schrock molybdenum alkylidene catalyst
Author(s) Mark Lautens, Cathleen M. Crudden, Alaa S. Abd-El-Aziz, Toru Wada
Journal Macromolecules,
Date 1991
Volume 24
Issue 6
Start page 1425
End page 1427
Abstract The living ring-opening metathesis polymns. of deltacyclene (I) and 5-(tert-butyldimethylsiloxy)deltacyclene (II) in presence of the Schrock catalyst Mo(=CHCMe2Ph)[=N-2,6-(iso-Pr)2Ph](O-tert-Bu)2 were described. II was prepd. by first epoxidizing I, then treating this epoxide with a Lewis acid in presence of thiophenol. The rearrangement that ensued placed an alc. at C-5 position and trapped the nucleophile at C-8 position, allowing the reintroduction of the double bond by oxidn. of the sulfide followed by a thermal elimination. The polymns. of I and II were done neat or in soln. II polymer was substantially more sol. in org. solvents than I polymer.
DOI 10.1021/ma00006a036

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