SU125554A1 - Method for preparing diesters of sulfodifluoroacetic acid - Google Patents
Method for preparing diesters of sulfodifluoroacetic acidInfo
- Publication number
- SU125554A1 SU125554A1 SU626718A SU626718A SU125554A1 SU 125554 A1 SU125554 A1 SU 125554A1 SU 626718 A SU626718 A SU 626718A SU 626718 A SU626718 A SU 626718A SU 125554 A1 SU125554 A1 SU 125554A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- acid
- sulfodifluoroacetic
- diesters
- preparing diesters
- pyrosultone
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Диэфиры сульфодифторуксусной кислоты, получаемые ло описываемому способу, могут быть использованы в качестве исходных соединений дл получени фторсодержащих пластических масс.Sulfodifluoroacetic acid diesters obtained by the described method can be used as starting compounds for the preparation of fluorine-containing plastics.
По предлагаемому способу диэфиры сульфодифторуксусной кислоты получают обработкой тетрафторэтан-р-пиросультона алкоголем.The proposed method diesters sulfodifluoroacetic acid is obtained by treating tetrafluoroethane-p-pyrosultone with alcohol.
Пример 1. К 10,0 вес. ч. сухого метилового спирта при О-5° и перемешивании прибавл ют порци ми 26,0 вес. ч. тетрафторэтан-р-пиросультона . Реакционную смесь трижды промывают лед ной водой порци ми по 20 вес. ч. Нижний слой отдел ют, высушивают над прокаленным сернокислым магнием и фракционируют сначала при атмосферном давлении , а затем в вакууме. Выдел ют две фракции: 4,3 вес. ч. диметилового эфира сульфофториддифторуксусной кислоты и 15,1 вес. ч. диметилового эфира сульфодифторуксусной кислоты (выход 74%).Example 1. To 10.0 weight. including dry methyl alcohol at 0 ° -5 ° and stirring, add 26.0 wt. in portions. including tetrafluoroethane-p-pyrosultone. The reaction mixture is washed three times with ice-cold water in portions of 20 wt. The bottom layer is separated, dried over calcined magnesium sulphate, and fractionated first at atmospheric pressure and then under vacuum. Two fractions were isolated: 4.3 wt. including dimethyl ether sulfofluoride difluoroacetic acid and 15.1 weight. including dimethyl ether sulfodifluoroacetic acid (yield 74%).
Диметиловый эфир сульфодифторуксусиой кислоты представл ет собой бесцветную т желую жидкость с при тным запахом, хорошо растворимую во всех органических растворител х; в воде не раствор етс . Т. кип. 83-85° при 8 мм; Af 1,4895; ,1,3990.Sulfodifluoroacetic acid dimethyl ester is a colorless, heavy liquid with a pleasant odor, readily soluble in all organic solvents; does not dissolve in water. T. Kip. 83-85 ° with 8 mm; Af 1.4895; , 1.3990.
Найдено в %%: С - 23,45; И - 2,74; F - 18,93; S - 15,43. Мол. вес - 208,0.Found in %%: C - 23.45; And 2.74; F - 18.93; S - 15.43. Mol weight - 208.0.
Вычислено в % %: С - 23,53; Н - 2,94; F - 18,63; S - 15,69. Мол. вес - 204,1.Calculated in%: C - 23.53; H - 2.94; F - 18.63; S - 15.69. Mol weight - 204.1.
Пример 2. Аналогично примеру/йзэтилового спирта и тетрафторэтан-р-пиросультона получают диэтиловый эфир сульфодифторуксусной кислюты с выходом 70%. Т. кип. 103-104° при 8 мм; A. 1,3482; п2 1,3939.Example 2. Analogously to the example of ethyl alcohol and tetrafluoroethane-p-pyrosultone, diethyl ether of sulfodifluoroacetic acid is obtained in 70% yield. T. Kip. 103-104 ° with 8 mm; A. 1,3482; p2 1.3939.
№ 125554- 2 -No. 125554- 2 -
Найдено в %%: С - 30,82; Н - 4,14; F - 16,85; S - 13,52. Мол. вес - 223,5.Found in %%: C - 30.82; H - 4.14; F - 16,85; S - 13.52. Mol weight - 223.5.
Вычислено в %%: С - 31,05; Н - 4,31; F - 16,36; S - 13,77. Мол. вес - 232,1.Calculated in %%: C - 31.05; H - 4.31; F - 16.36; S - 13.77. Mol weight - 232.1.
Предмет изобретени Subject invention
Способ получени диэфиров сульфодифторуксусной кислоты, о тличающийс тем, что тетрафторэтан-р-пиросультон обрабатывают алкоголем.A process for the preparation of sulfodifluoroacetic acid diesters characterized in that tetrafluoroethane-p-pyrosultone is treated with alcohol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU626718A SU125554A1 (en) | 1959-04-28 | 1959-04-28 | Method for preparing diesters of sulfodifluoroacetic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU626718A SU125554A1 (en) | 1959-04-28 | 1959-04-28 | Method for preparing diesters of sulfodifluoroacetic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU125554A1 true SU125554A1 (en) | 1959-11-30 |
Family
ID=48396898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU626718A SU125554A1 (en) | 1959-04-28 | 1959-04-28 | Method for preparing diesters of sulfodifluoroacetic acid |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU125554A1 (en) |
-
1959
- 1959-04-28 SU SU626718A patent/SU125554A1/en active
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