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Updated: Feb 21, 2026

Facile Preparation of 2Z,4E-Dienamides by the Olefination of Electron-deficient Alkenes with Allyl Acetate
Published on: June 21, 2017
Alkene-assisted cis-to-trans isomerization of non-conjugated polyunsaturated alkenes
A V Smarun1, F Duzhin2, M Petković3
1Department of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, Singapore.
Abstract:
Complex [Cp*Ru(NCMe)3][PF6], 1a, has been identified as a cis-to-trans isomerization catalyst of various non-conjugated cis-polyalkenes under exceptional kinetic control as no alkene conjugation was observed. According to the experimental and theoretical data, the cis-trans isomerization occurred via an alkene-assisted mechanism in which one cis-double bond always served as an anchoring site. Using a combination of multinuclear NMR spectroscopic evidence and mathematical methods it was possible to determine the extent of trans isomerization.
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