Methyl oct-cis-2-enoate was synthesized by selective hydrogenation of methyl oct-2-ynoate at atmospheric pressure with quinoline poisoned palladium as catalyst. The resulting product contained only 7% of the tran~ form, as determined by GLC. The structure was confirmed by infrared spectra. Analysis of the infrared spectra is given. The cis and trans forms of methyl oct-2-enoate were separable by GLC in polar or nonpolar columns. GLC runs in polar and non-polar phases showed that the ~ position of the double bond of methyl oet-2-enoate so affects its properties, that practically no interaction was observed between the double bond and the polar phase. Consequently volatility was the main factor determining the retention times of cis and trans methyl oct-2-enoate in the polar and non-polar phases studied.
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