| 摘要 |
PURPOSE:To prepare a cyclohexanol derivative useful as a solvent and a raw material of polymer, in one step, by the reductive addition reaction of an aromatic hydrocarbon with hydrogen in the presence of a mixture containing a strong acid, water, and if necessary, an organic acid, using a noble metal of VIII group of the periodic table as a catalyst. CONSTITUTION:The preparation of cyclohexanol derivative of formula (Ac is H, organic acid residue or strong acid residue; R is alkyl; n is 0, 1 or 2) by the hydrogenation of an aromatic hydrocarbon (e.g. benzene) using a noble metal of the VIII group of the periodic table (pref. Ru or Rh) as a catalyst, is carried out in the presence of a strong acid, and water and/or an organic acid. The presence of the strong acid is essential, and its amount is >=2% of the sum of the strong acid and water and/or an organic acid. The strong acid is, e.g. sulfuric acid, phosphoric acid, etc., and the organic acid is, preferably acetic acid. |
