Selective Hydrogenation With Copper Catalysts: 1. Isolation and Identification of Isomers Formed During Hydrogenation of Linolenate

نویسندگان

  • SAMBASIVARAO KORITALA
  • C. R. SCHOLFIELD
چکیده

Methyl linolenate was hydrogenated with 1050 copper chromite catalyst at 150 C and atmospheric hydrogen pressure. The product was separated into monoene, diene and triene fractions by countercurrent distribution. These fractions were further separated into "arious geometrical isomers. The double bond location in the "arious fractions was determined b" reductiw ozonolysis. Double bonus in both cis anli trans monoene fractions, as wC'll as in cis,trans alJ(I tranS,trans conjugated dienes, were extensi,'cly isomerized. A monoene containing vinylic unsaturation was one of the major products. The nonconjugated dienes were mostly dienes whose double bonds were widely separatC'd. Results are explained on the basis of conjugation of the double bonds in linolenate followed by hydrogen addition.

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تاریخ انتشار 2007