Summary
Methylcis-10,cis-12-octadecadienoate was prepared and found to have an ultraviolet absorption peak at 235 mµ, α=95. The infrared spectrum revealed no diagnostic peaks for thecis,cis conjugated system.
The hydrogenation of the ester showed that when one mole of hydrogen was added, 1–2, 1–4, and 3–4 addition took place with equal ease to produce an equimolar mixture ofcis-10-,trans-11-, andcis-12-octadecenoates. An explanation of the reaction is offered on the basis of the structure of the diene system.
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References
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Allen, R.R. Isomerization during hydrogenation. II. Methyl cis-10, cis-12-octadecadienoate. J Am Oil Chem Soc 33, 301–304 (1956). https://doi.org/10.1007/BF02639333
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DOI: https://doi.org/10.1007/BF02639333