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Polystyrene-bound bis(cyclopentadienyl)titanium dichloride has been shown to react with Grignard reagents to form a reactive alkene isomerization catalyst, which converts 1-alkenes primarily into E-2-alkenes at room temperature. The catalyst specificity seen for this polymer-bound catalyst is altered from that seen in an analogous homogeneous system. Hydrogenation of alkenes has also been accomplished when 1-alkenes are allowed to react with these same catalysts under hydrogen. Internal alkenes are unreactive toward these catalysts. The efficacy of organomagnesium versus organolithium reagents for preparation of these catalysts and the application of 13C NMR to the study of polymer-supported catalytic systems is described. 1981.
Journal of Organometallic Chemistry
author list (cited authors)
Bergbreiter, D. E., & Parsons, G. L.