| 摘要 |
<p>PROBLEM TO BE SOLVED: To stably sustain catalyst performances even by a reaction for a long time and produce the subject compound by adding a base to a specific carboxylic acid in the presence of a specified metal catalyst and directly hydrogenating the carboxylic acid. SOLUTION: (C) A base in an amount so that 0.1-80 mol.% of carboxyl groups present in the liquid phase is present as an alkali (ne earth) metal salt [preferably a hydroxide of the alkali (ne earth) metal or an organic acid salt] is added to react (A) at least one kind of carboxylic acid compound selected from adipic acid, E-hydroxycaproic acid andε-caprolactone with hydrogen in the presence of (B) a catalyst containing ruthenium and tin in the liquid phase to thereby afford 1,6-hexanediol. The component B is preferably used by further including platinum or preferably used as a supporting type catalyst for supporting an active component on a carrier (preferably active carbon). Thereby, the raw material can directly be hydrogenated under mild conditions.</p> |
