| 摘要 |
PURPOSE:To manufacture easily a cyclic terpene hydrocarbon represented by a specified general expression by bringing an acylic terpene alcohol represented by a specified general expression into an electrolytic reaction. CONSTITUTION:An acyclic terpene alcohol represented by general expression I and/or II such as geraniol is brought into an electrolytic reaction to manufacture a cyclic terpene represented by general formula III such as limonene. In the expression, n is integer ''0'' or ''1'', one between Z<1> and Z<2> is H, the other forms a single bond together with Z, two among X<1>, X<2> and X<3> are H, and the residual one forms a single bond together with X. In the electrolytic reaction, it is preferable to use a suitable electrolyte such as an alkali metallic perchlorate by about 0.1-10mol per 1mol acyclic terpene alcohol as starting material, and the reaction is desirably carried out in a solvent such as tetrahydrofuran so as to increase the reaction rate and to improve the selectivity coefficient in the reaction.
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