SU56272A1 - The method of obtaining ** - acetopropyl bromide from varnishes ** - hydroxyethyl acetoacetic acid - Google Patents
The method of obtaining ** - acetopropyl bromide from varnishes ** - hydroxyethyl acetoacetic acidInfo
- Publication number
- SU56272A1 SU56272A1 SU1471A SU1471A SU56272A1 SU 56272 A1 SU56272 A1 SU 56272A1 SU 1471 A SU1471 A SU 1471A SU 1471 A SU1471 A SU 1471A SU 56272 A1 SU56272 A1 SU 56272A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- bromide
- acetopropyl
- hydroxyethyl
- varnishes
- obtaining
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
т-ацетопропилбромид (-бромпропилметил-кетон ) обычно получаетс путем взаимодействи т -ацетопропилового спирта со смесью бромистого натри и серной кислоты (авторское свидетельство № 42998).t-acetopropyl bromide (-bromopropylmethyl-ketone) is usually obtained by reacting t-acetopropyl alcohol with a mixture of sodium bromide and sulfuric acid (certificate of authorship No. 42998).
Автором насто щего изобретени найдено, что т-ацетопропилбромид может быть получен в тех же услови х из лактона -оксиэтилацетоуксусной кислоты. Лактон под действием серной кислоты легко омыл етс , и образующийс при этом ацетопрониловый спирт с бромисто- водородной кислотой смеси образует соответствующий бромид.The inventor of the present invention has found that t-acetopropyl bromide can be obtained under the same conditions from the lactone-oxyethyl acetoacetic acid. Under the action of sulfuric acid, the lactone is easily saponified, and the resulting acetopropyl alcohol with hydrobromic acid of the mixture forms the corresponding bromide.
Р-окси-этилацетоуксусна кислота получаетс в качестве промежуточного продукта синтеза ацетонропилового спирта.P-hydroxyethyl acetic acid is obtained as an intermediate product for the synthesis of acetonropyl alcohol.
Предлагаемый метод дает возможность провести получение ацетопропил ромида и омыление лактона в одну операцию.The proposed method makes it possible to carry out the production of acetopropyl romide and the saponification of the lactone in one operation.
Пример. В смесь из 103 г бромистого натри , 50 г серной кислоты и воды быстрой струей приливают технический лактон р-оксиэтилацетоуксусной кислоты (64 г lOOVo). Реакционкую массу нагревают при перемешивании до прекращени выделени углекислого газа, затем охлаждают и отдел ют осадок т-ацетопропилбромида. Дл очистки бромид промывают раствором соды, сушат и перегон ют. Можно при нагревании реакционной массы производить отгонку ацетопропилбромида . Последний гонитс с парами воды в виде слабо окрашенного масла.Example. A technical lactone of p-hydroxyethyl acetoacetic acid (64 g of lOOVo) is poured in a rapid stream into a mixture of 103 g of sodium bromide, 50 g of sulfuric acid and water. The reaction mass is heated with stirring until carbon dioxide evolution ceases, then cooled and the precipitate of t-acetopropyl bromide is separated. For purification, the bromide is washed with soda solution, dried and distilled. You can when the reaction mass is heated to produce the distillation of acetopropyl bromide. The latter is driven with water vapor in the form of a lightly colored oil.
Предмет изобретени .The subject matter of the invention.
Способ получени т-ацетопропилбромида (т-бромпропил-метил-кетона) из лактона -оксиэтилацето-уксусной кислоты , отличающийс тем, что лактон ввод т при нагревании и размешивании в бромистоводородную кислоту, полученную обычным способом.A process for the preparation of t-acetopropyl bromide (t-bromopropyl-methyl ketone) from α-hydroxyethyl acetoacetic acid lactone, characterized in that the lactone is introduced with heating and stirring into hydrobromic acid, prepared in the usual manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1471A SU56272A1 (en) | 1938-03-19 | 1938-03-19 | The method of obtaining ** - acetopropyl bromide from varnishes ** - hydroxyethyl acetoacetic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1471A SU56272A1 (en) | 1938-03-19 | 1938-03-19 | The method of obtaining ** - acetopropyl bromide from varnishes ** - hydroxyethyl acetoacetic acid |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU32620 Addition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SU3940A1 SU3940A1 (en) | 1928-07-31 |
| SU56272A1 true SU56272A1 (en) | 1938-11-30 |
Family
ID=52808358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1471A SU56272A1 (en) | 1938-03-19 | 1938-03-19 | The method of obtaining ** - acetopropyl bromide from varnishes ** - hydroxyethyl acetoacetic acid |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU56272A1 (en) |
-
1938
- 1938-03-19 SU SU1471A patent/SU56272A1/en active
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