| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a diol having an aliphatic ring skeleton in high yield, while avoiding viscosity increase of a reaction system, sudden heat generation and thermal runaway chemical reaction.SOLUTION: There is provided a method for producing a diol having an aliphatic ring skeleton including the steps of: dripping Broensted base such as an alkali metal hydroxide, an alkaline earth metal hydroxide or a carbonate in the presence of formaldehyde and an aldehyde represented by formula (1) at a reaction temperature of 10 to 80°C; and bringing the resultant product into contact with water in the temperature range of 50 to 70°C. In the formula, R represents a C2-10 alkylene group optionally substituted by a C1-4 alkyl group.SELECTED DRAWING: None |
