P. Kukula, L. Červený
Feb 8, 1999
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0
Influential Citations
11
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Journal
Applied Catalysis A-general
Abstract
Abstract Methyl trans -2-hexenoate was prepared with a two-step synthesis from trans,trans -2,4-hexadienoic acid ( sorbic acid ). The first step was the methanol esterification of sorbic acid catalyzed with sulfuric acid. The second step was a catalytic hydrogenation of the resulting methylester using metallic catalysts based on Pt, Pd, Rh and Ni carried on an activated carbon and γ -alumina. During the hydrogenation reactions, in all cases, monoolefinic methyl trans -2-hexenoate was produced as the main reaction intermediate. Varied isomers of methyl 3- and 4-hexenoates resulted from the reactions as the side intermediates. The resulting intermediates further hydrogenated to a common product, methyl hexanoate. Palladium was the most apposite catalyst, due to its high activity and significant selectivity to the production of methyl trans -2-hexenoate. At the end, the raw intermediate was rectificated under the atmospheric pressure.