SU514803A1 - The method of obtaining trifluoroethyl alcohol - Google Patents

The method of obtaining trifluoroethyl alcohol

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Publication number
SU514803A1
SU514803A1 SU2060410A SU2060410A SU514803A1 SU 514803 A1 SU514803 A1 SU 514803A1 SU 2060410 A SU2060410 A SU 2060410A SU 2060410 A SU2060410 A SU 2060410A SU 514803 A1 SU514803 A1 SU 514803A1
Authority
SU
USSR - Soviet Union
Prior art keywords
trifluoroethyl
alcohol
obtaining
trifluoroethyl alcohol
hydrogenation
Prior art date
Application number
SU2060410A
Other languages
Russian (ru)
Inventor
Василий Филлипович Заболотских
Алексей Павлович Харченко
Виктор Иванович Тюриков
Игорь Рейнгольдович Сильвентойнен
Галина Дмитриевна Новикова
Людмила Станиславовна Кушнарева
Original Assignee
Предприятие П/Я Г-4567
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Filing date
Publication date
Application filed by Предприятие П/Я Г-4567 filed Critical Предприятие П/Я Г-4567
Priority to SU2060410A priority Critical patent/SU514803A1/en
Application granted granted Critical
Publication of SU514803A1 publication Critical patent/SU514803A1/en

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Description

(54) СПОПОБ ПОЛУЧЕНИЯ ТРИФТОРЭТИЛОВОГО СПИРТА(54) FIRST PRODUCTION OF TRIFTORETHYL ALCOHOL

Предлагаетс  способ получени  полифторированных спиртов, в частности усовершенствованный способ получени  трифторэтилового спирта, который находит применение при синтезе поверхностно активных веществ каучуков, физиологически активных препаратов и дл  модификации полимеров. Известны способы получени  трифторэтилового спирта путем гидрировани  различ- ных производных трифторуксусной кислоты. Например, известно получение трифгорэтилового спирта путем газофазного гидрировани  трифторэтилтрифторацетата, трифторэтилацетата , а также гидрированием фгорал ; Кроме этого, известен способ получени  i трифторэтилового спирта жидкофазным гидрированием ангидрида трифгоруксусной кислоты в автоклаве при повышенном давлении Водорода (до 50 атм) и температуре 20i 40°С в гфисутртвии катализатора гидриро. I вани  - платиновой черни. Образующиес  в результате реакции трифторэтиловый IJ спирт и грифторуксусную кислоту раздеIf л ютазеотропной перегонкой с дибу- . типовым эфиром, а трифторэтилтрифггорацетат подвергают водно-щелочному гидролизу дл  выделени  трифторэтилового спирта. Выход трифторэтилсвого сгшрта составл ет 23%, счита  на использованный ангидрид трифторуксусной кислоты. ; Однако технологическое оформление процесса сложно. Гидрирование провод т в автоклаве при сравнительно высоком Iдавлении водорода (до 50 атм), .что св ;зано с повыщенной взрывоопасностью про- :цесса. Процесс периодичен, кроме того, приготовление платиновой черки довольно сложно, а выделение ее из реакционной j массы сопр жено с потер ми дорогосто щего металла. Разделение трифторэтилово- го спир1а и трифторуксусной кислоты осуществл ют азеотропной перегонкой с применением органического растворител  дибутилового эфира. Кроме того, выход це-i левого продукта сравнител1: но низок. С целью упрощени  технологии процесса и повышени  выхода целевого пропуктд,A method is proposed for the preparation of polyfluorinated alcohols, in particular, an improved method for the preparation of trifluoroethyl alcohol, which is used in the synthesis of surface-active substances of rubbers, physiologically active preparations and for the modification of polymers. There are known methods for producing trifluoroethyl alcohol by hydrogenating various trifluoroacetic acid derivatives. For example, it is known to produce trifluoroethyl alcohol by gas phase hydrogenation of trifluoroethyl trifluoroacetate, trifluoroethyl acetate, as well as hydrogenation of fural; In addition, a method is known for producing i-trifluoroethyl alcohol by liquid-phase hydrogenation of trifluoroacetic anhydride in an autoclave at elevated Hydrogen pressure (up to 50 atm) and a temperature of 20i 40 ° C in the hydriro catalyst lip. I Vani - platinum mobile. The resulting trifluoroethyl IJ alcohol and grifluoroacetic acid are separated by lutaseotropic distillation from dibu-. type ether, and trifluoroethyl trifg acetate is subjected to aqueous alkaline hydrolysis to isolate trifluoroethyl alcohol. The yield of trifluoroethyl is 23%, based on the trifluoroacetic anhydride used. ; However, the technological design process is difficult. The hydrogenation is carried out in an autoclave at a relatively high hydrogen pressure (up to 50 atm), which is associated with a heightened explosion hazard of the pro- cess. The process is periodic, moreover, the preparation of platinum Cherkish is rather difficult, and its isolation from the reaction j mass is associated with the loss of an expensive metal. Separation of trifluoroethyl alcohol and trifluoroacetic acid is carried out by azeotropic distillation using an organic solvent of dibutyl ether. In addition, the output of the cent-i of the left product is comparative1: but low. In order to simplify the process technology and increase the yield of the target product,

SU2060410A 1974-09-18 1974-09-18 The method of obtaining trifluoroethyl alcohol SU514803A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU2060410A SU514803A1 (en) 1974-09-18 1974-09-18 The method of obtaining trifluoroethyl alcohol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU2060410A SU514803A1 (en) 1974-09-18 1974-09-18 The method of obtaining trifluoroethyl alcohol

Publications (1)

Publication Number Publication Date
SU514803A1 true SU514803A1 (en) 1976-05-25

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Application Number Title Priority Date Filing Date
SU2060410A SU514803A1 (en) 1974-09-18 1974-09-18 The method of obtaining trifluoroethyl alcohol

Country Status (1)

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SU (1) SU514803A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4255594A (en) * 1979-09-18 1981-03-10 Allied Chemical Corporation Hydrogenation of halogen-containing carboxylic anhydrides

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4255594A (en) * 1979-09-18 1981-03-10 Allied Chemical Corporation Hydrogenation of halogen-containing carboxylic anhydrides

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