FIELD: organic synthesis.
SUBSTANCE: invention relates to the field of basic organic and petrochemical synthesis, namely to a method for producing 4,4-dimethyl-1,3-dioxane (DMD) by condensation of tert-butanol with an aqueous solution of formaldehyde in the presence of phosphoric acid at elevated temperature and pressure, and subsequent isolation of DMD from the reaction mass, while condensation is carried out in the presence of NaA zeolite with a pore diameter of 4 Å or CaA with a pore diameter of 5 Å, the content of which is maintained in an amount of 3.5-5.0 wt.% of the reaction mass.
EFFECT: increased selectivity of DMD formation.
3 cl, 1 tbl, 3 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PRODUCING 4,4-DIMETHYL-1,3-DIOXANE USING CARBON NANOTUBES | 2021 |
|
RU2764517C1 |
| METHOD OF PRODUCING 4,4-DIMETHYL-1,3-DIOXANE (VERSIONS) | 2016 |
|
RU2631429C1 |
| APPLICATION OF SYNTHETIC ZEOLITES FOR INCREASING SELECTIVITY IN THE PRODUCTION OF 4,4-DIMETHYL-1,3-DIOXANE (OPTIONS) | 2016 |
|
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| METHOD OF PRODUCING 4,4-DIMETHYL-1,3-DIOXANE | 2023 |
|
RU2811258C1 |
| METHOD FOR PRODUCING 4,4-DIMETHYL-1,3-DIOXANE USING POLYARYLENE PHTHALIDE | 2021 |
|
RU2764518C1 |
| METHOD OF PRODUCING 4,4-DIMETHYL-1,3-DIOXANE | 2016 |
|
RU2624678C1 |
| USE OF CARBON NANOTUBES TO INCREASE SELECTIVITY IN THE PRODUCTION OF 4,4-DIMETHYL-1,3-DIOXANE | 2021 |
|
RU2764519C1 |
| USE OF POROUS POLYARYLENEPHTHALIDE TO INCREASE SELECTIVITY WHEN PRODUCING 4,4-DIMETHYL-1,3-DIOXANE | 2021 |
|
RU2768818C1 |
| APPLICATION OF CARBON NANOTUBES TO INCREASE SELECTIVITY IN PRODUCTION OF 4,4-DIMETHYL-1,3-DIOXANE | 2016 |
|
RU2658839C2 |
| METHOD FOR THE PREPARATION OF 4,4-DIMETHYL-1,3-DIOXANE | 2018 |
|
RU2663292C1 |
