| 摘要 |
PROBLEM TO BE SOLVED: To convert cis-and trans-cyclododecene oxide to cyclododecanone without causing a by-product unusable for a primary product and a final product. SOLUTION: Cis-and trans-Cyclododecene oxides are converted to cyclododecanone by using hydrogen excited by a catalyst in the presence of the copper catalyst containing 0.4-4 wt.% of chromium, 0.6-8 wt.% of barium and fine particle silicic acid or activated alumina as a carrier or constituted of copper or a copper compound and zinc oxide) at 150-260 deg.C under atmosphere or pressure a little higher than atmosphere. The conversion is advanced through cyclododecen-3-ol and cyclododecen-3-one to give cyclododecene as a by-product. Cyclododecene is separated by distillation and is used in the production of cis-and trans-cyclododecene oxide.
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