UA8331A1 - Способ получения 6-метил-3,4 дигидро-1, 2, 3, оксатиазин-4-он-2, 2-диоксида - Google Patents
Способ получения 6-метил-3,4 дигидро-1, 2, 3, оксатиазин-4-он-2, 2-диоксидаInfo
- Publication number
- UA8331A1 UA8331A1 UA4028042A UA4028042A UA8331A1 UA 8331 A1 UA8331 A1 UA 8331A1 UA 4028042 A UA4028042 A UA 4028042A UA 4028042 A UA4028042 A UA 4028042A UA 8331 A1 UA8331 A1 UA 8331A1
- Authority
- UA
- Ukraine
- Prior art keywords
- oxathiazin
- dihydro
- methyl
- dioxide
- inert
- Prior art date
Links
- XLXCHZCQTCBUOX-UHFFFAOYSA-N 1-prop-2-enylimidazole Chemical compound C=CCN1C=CN=C1 XLXCHZCQTCBUOX-UHFFFAOYSA-N 0.000 title abstract 5
- 238000000034 method Methods 0.000 title abstract 2
- 238000002360 preparation method Methods 0.000 title abstract 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 4
- 239000003960 organic solvent Substances 0.000 abstract 2
- QXBGLCSYJYZBFK-UHFFFAOYSA-N 3-oxobutanoylsulfamic acid Chemical compound CC(=O)CC(=O)NS(O)(=O)=O QXBGLCSYJYZBFK-UHFFFAOYSA-N 0.000 abstract 1
- 238000002425 crystallisation Methods 0.000 abstract 1
- 230000008025 crystallization Effects 0.000 abstract 1
- 238000004821 distillation Methods 0.000 abstract 1
- 239000003049 inorganic solvent Substances 0.000 abstract 1
- 229910001867 inorganic solvent Inorganic materials 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000001953 recrystallisation Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Способ получения 6-метил-3,4-дигиро-1,2,3-оксатиазин-4-он-2,2-диоксида включает циклизацию три (низший алкил) аммоний ацетоацетамид-N-сульфоната под действием избытка серного ангидрида в среде метиленхлорида при охлаждении, гидролизом образующегося 6-метил-3,4-дигидро-1,2,3-оксатиазин-4-он-2,2-диоксида с серным ангидридом и последующим выделением целевого продукта. С целью повышения чистоты целевого продукта и упрощения технологии процесса для выделения целевого продукта из смеси, образующейся после гидролиза, отгоняется метиленхлорид и из остающейся водно-сернокислой фазы кристаллизуется целевой продукт.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| UA4028042A UA8331A1 (ru) | 1986-09-01 | 1986-09-01 | Способ получения 6-метил-3,4 дигидро-1, 2, 3, оксатиазин-4-он-2, 2-диоксида |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| UA4028042A UA8331A1 (ru) | 1986-09-01 | 1986-09-01 | Способ получения 6-метил-3,4 дигидро-1, 2, 3, оксатиазин-4-он-2, 2-диоксида |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| UA8331A1 true UA8331A1 (ru) | 1996-03-29 |
Family
ID=74555977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| UA4028042A UA8331A1 (ru) | 1986-09-01 | 1986-09-01 | Способ получения 6-метил-3,4 дигидро-1, 2, 3, оксатиазин-4-он-2, 2-диоксида |
Country Status (1)
| Country | Link |
|---|---|
| UA (1) | UA8331A1 (ru) |
-
1986
- 1986-09-01 UA UA4028042A patent/UA8331A1/ru unknown
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