9-Octadecene, 1-bromo-, (9Z)- → (Z)-9-Tricosene

関与物質

反応手順

To a stirred solution of 1.15 moles of amylmagnesium bromide in 335 ml. anhydrous tetrahydrofuran at -8° is added 0.028 moles of lithium chlorocyanocuprate in tetrahydrofuran, prepared in Example 1 above. Dropwise addition of 1.00 moles of Z-9-octadecenyl bromide is carried out with cooling to maintain the temperature at from about -6° to +5°. The reaction mixture is maintained at -5° to +5° for 1 hour. Magnesium bromide is precipitated by the addition of hexane and a minor amount of water. The slurry of granular solid is filtered and washed with hexane. Evaporation of solvent from the filtrate gives a clear amber oil of Z-9-tricosene in 99% yield.

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