Improved preparation of 9-octadecenes
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cis- andtrans-9-Octadecenes have been obtained in about 55–60% yield on a preparative scale by an improved procedure from commercially pure oleyl alcohol (90–95%) and elaidyl alcohol, respectively, by conversion to the tosylates followed by reduction with lithium aluminum hydride (LAH). The improvement consists in using saturated sodium chloride solution to coagulate the slimy, intractable, insoluble salts obtained after the LAH reduction and destruction of excess LAH with water, prior to ether extraction of the crude hydrocarbons. Total time required for the preparation is about three days.
KeywordsMethyl Oleate Infrared Absorption Spectrum Oleyl Alcohol Lithium Aluminum Hydride Elaidate
- 1.Elsner, B. B., and P. F. M. Paul, J. Chem. Soc.1953, 3156.Google Scholar