| abstract |
(57) [Summary] [Problem] Water and methanol are highly separated 1,3- How to provide dioxolane. SOLUTION: In the presence of an acid catalyst, a step of reacting formaldehyde or a substance that generates formaldehyde with ethylene glycol, a step of distilling and separating a product from a reaction solution, after adding an alkaline substance to the obtained reaction distillate or A step of concentrating by distillation while adding, Extracting 1,3-dioxolane from the distilled concentrate using alkyl-substituted benzene as an extractant, removing low-boiling impurities from the extract by distillation, and separating 1,3-dioxolane from the extractant by distillation Consisting of processes A method for producing 1,3-dioxolan. |