SU203661A1 - METHOD OF OBTAINING p-FTOR-8-CHLORETHANOL - Google Patents
METHOD OF OBTAINING p-FTOR-8-CHLORETHANOLInfo
- Publication number
- SU203661A1 SU203661A1 SU1101227A SU1101227A SU203661A1 SU 203661 A1 SU203661 A1 SU 203661A1 SU 1101227 A SU1101227 A SU 1101227A SU 1101227 A SU1101227 A SU 1101227A SU 203661 A1 SU203661 A1 SU 203661A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- fluoro
- ftor
- chlorethanol
- obtaining
- ether
- Prior art date
Links
- RTZKZFJDLAIYFH-UHFFFAOYSA-N diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 10
- HPQVWDOOUQVBTO-UHFFFAOYSA-N lithium aluminium hydride Substances [Li+].[Al-] HPQVWDOOUQVBTO-UHFFFAOYSA-N 0.000 description 4
- OCZDCIYGECBNKL-UHFFFAOYSA-N lithium;alumanuide Chemical compound [Li+].[AlH4-] OCZDCIYGECBNKL-UHFFFAOYSA-N 0.000 description 4
- 238000009835 boiling Methods 0.000 description 3
- 239000011541 reaction mixture Substances 0.000 description 3
- VSCWAEJMTAWNJL-UHFFFAOYSA-K Aluminium chloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- SRTHRWZAMDZJOS-UHFFFAOYSA-N Lithium hydride Chemical compound [H-].[Li+] SRTHRWZAMDZJOS-UHFFFAOYSA-N 0.000 description 2
- WFDIJRYMOXRFFG-UHFFFAOYSA-N acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- JIAARYAFYJHUJI-UHFFFAOYSA-L Zinc chloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- -1 aliphatic halogen Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- CSNNHWWHGAXBCP-UHFFFAOYSA-L magnesium sulphate Substances [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
Description
1one
Изобретение относитс к области получени смешанных галогенпроизводных алкоголей алифатического р да, которые могут найти широкое применение в препаративной органической химии.This invention relates to the field of producing mixed aliphatic halogen derivatives of alcohols, which can be widely used in preparative organic chemistry.
Предложен способ получени нового, ранее ке описанного в литературе химического соединени р-фтор-р-хлорэтанола, состо ш,ий в том, что этиловый эфир р-фтор-р-хлоруксусной кислоты подвергают взаимодействию с литийалюминийгидридом в среде безводного эфира при температуре кипени реакционной массы с последующим выделением целевого продукта известным способом.A method has been proposed for the preparation of the previously described chemical compound p-fluoro-p-chloroethanol, which is that the p-fluoro-p-chloroacetic acid ethyl ester is reacted with lithium aluminum hydride in anhydrous ether at the boiling point of the reaction mass, followed by separation of the target product in a known manner.
Выход целевого продукта 40%.The yield of the target product is 40%.
Пример 1. р-Фтор-р-хлорэтанол.Example 1. p-Fluoro-p-chloroethanol.
К 10,9 г литийалюминийгидрида, полученного из 17,37 г гидрида лити и 38,4 г хлористого алюмини в 650 мл сухого эфира, прибавл ют 67,5 г этилового эфира р-фтор-р-хлоруксусной кислоты. Реакционную смесь нагревают до температуры кипени и выдерживают 30 мин, охлаждают и избыток литийалюминийгидрида разлагают водой. Затем реакционную смесь выливают на лед CHgSOi (20%-на ). Эфирный раствор отдел ют и сушат MgS04. Эфир отгон ют, остаток перегон ют . Получают 17,2 г (36,8%) вещества; т. кип. Й6-116,5°С (739 МЛ1 рт. ст.); df 1,3479;To 10.9 g of lithium aluminum hydride, obtained from 17.37 g of lithium hydride and 38.4 g of aluminum chloride in 650 ml of dry ether, were added 67.5 g of p-fluoro-p-chloroacetic acid ethyl ester. The reaction mixture is heated to boiling point and held for 30 minutes, cooled and excess lithium aluminum hydride is decomposed with water. Then the reaction mixture was poured onto CHgSOi ice (20%). The ether solution is separated and dried with MgSO4. The ether is distilled off, the residue is distilled. 17.2 g (36.8%) of the substance are obtained; m.p. H6-116.5 ° C (739 ML1 Hg. Art.); df 1.3479;
По 1,4060; MRo 17,95; вычислено 17,731.4060 each; MRo 17.95; calculated 17.73
Найдено, %: С 24,62; 24,75; Н 4,22; 4,26; Г 19,16; 19,30.Found,%: C 24.62; 24.75; H 4.22; 4.26; Г 19,16; 19.30.
Вычислено дл CaHsFOCl, %; С 24,40; Н 4,06; F 19,60.Calculated for CaHsFOCl,%; C 24.40; H 4.06; F 19.60.
Пример 2. р-Ф тор-р-хлорэтилацет а т.Example 2. pF Tor-p-chloro ethyl acetate and t.
Смесь 5 г р-фтор-р-хлорэтанола, 5,18 г уксусного ангидрида и 0,5 г хлористого цинка нагревают при 130-140°С в течение 2 час. Реакционную смесь обрабатывают 10%-ным раствором поташа. Водную часть экстрагируют эфиром. Объединенный органический слой сушат КаСОз и перегон ют. Получают 3,2 г (45%) вещества, т. кип. 132-134°С (760 мм рт. ст.); л.о 1,4013; df 1,2516; MRo 27,30, вычислено 26,67.A mixture of 5 g of p-fluoro-p-chloroethanol, 5.18 g of acetic anhydride and 0.5 g of zinc chloride is heated at 130-140 ° C for 2 hours. The reaction mixture is treated with a 10% solution of potash. The aqueous portion is extracted with ether. The combined organic layer was dried with KACO3 and distilled. Obtain 3.2 g (45%) of the substance, t. Kip. 132-134 ° С (760 mm of mercury); l.o 1,4013; df 1.2516; MRo 27.30, calculated 26.67.
Найдено, %: С 34,82; 34,54; Н 4,59; 4,41; F 13 23 13 54Found,%: C 34.82; 34.54; H 4.59; 4.41; F 13 23 13 54
Вычислено дл , %: С 34,15; Н 4,26; F 13,51.Calculated for:%: C 34.15; H 4.26; F 13.51.
Предмет изобретени Способ получени р-фтор-р-хлорэтанола, отличающийс тем, что этиловый эфир р-фторр-хлоруксусной кислоты подвергают взаимодействию с литийалюминийгидридом в среде безводного эфира при температуре кипени реакционной массы с последуюшим выделением целевого продукта известным способом.The subject of the invention is a method of producing p-fluoro-p-chloroethanol, characterized in that the p-fluoro-chloroacetic acid ethyl ester is reacted with lithium aluminum hydride in anhydrous ether at the boiling point of the reaction mass, followed by isolation of the target product by a known method.
Publications (1)
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SU203661A1 true SU203661A1 (en) |
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