SU505639A1 - The method of obtaining - / benzimidazolyl-2 / perfluorocarboxylic acids - Google Patents

The method of obtaining - / benzimidazolyl-2 / perfluorocarboxylic acids

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Publication number
SU505639A1
SU505639A1 SU2076929A SU2076929A SU505639A1 SU 505639 A1 SU505639 A1 SU 505639A1 SU 2076929 A SU2076929 A SU 2076929A SU 2076929 A SU2076929 A SU 2076929A SU 505639 A1 SU505639 A1 SU 505639A1
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SU
USSR - Soviet Union
Prior art keywords
obtaining
benzimidazolyl
perfluorocarboxylic acids
perfluorocarboxylic
target product
Prior art date
Application number
SU2076929A
Other languages
Russian (ru)
Inventor
Нина Алексеевна Маличенко
Original Assignee
Институт Органической Химии Ан Украинской Сср
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Priority to SU2076929A priority Critical patent/SU505639A1/en
Application granted granted Critical
Publication of SU505639A1 publication Critical patent/SU505639A1/en

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Description

(54) СПОСОБ ПОЛУЧЕНИЯ ба-(БЕНЗИМИДАЗОЛИЛ-2) ПЕРФТОРКАРБОНОВЫХ КИСЛОТ(54) METHOD FOR OBTAINING BA-(BENZIMIDAZOZYL-2) PERFLUOROUS CARBON ACIDS

Смесь 2,14 г. амвда общей формулы И ( Л 2) к 15 мл сол ной кислоты (концентраци  ) кип т т 3 час в колбе с обратным холодильником, а затем охлаждают . Осадок отфильтровывают и промывают водой. Выход 1,34 г (67%), т. пл. 255-256°С (из воды), что соответствует литературным данным. Смешанна  проба кислоты; - полученной по предлагаемому способу , и этой же кислоты, синтез1фованной по известному способу, не дает депрессии температ фы плавлени .A mixture of 2.14 g of amvd of the general formula I (L 2) to 15 ml of hydrochloric acid (concentration) is refluxed for 3 hours in a flask, and then cooled. The precipitate is filtered off and washed with water. The output of 1.34 g (67%), so pl. 255-256 ° C (out of water), which corresponds to the literature data. Mixed acid sample; - obtained by the proposed method, and the same acid, synthesized by a known method, does not depress the melting point.

Пример2. J -(Бензимиаазолил-2 перфтормасл на  кислота.Example2. J - (Benzimiazolyl-2 perfluoromethyl acid.

Смесь 5,3 г амида обшей формулы IIA mixture of 5.3 g of the amide of the general formula II

(Л- 3) и 4О мл 17%-ной сол ной кислоты кип т т 3 час, затем охлаждают, осадо отфильтровывают и промывают водой. Выход 4,3 г (83%), т. пл. 274-275°С (разл. из водного спирта).(L-3) and 4O ml of 17% hydrochloric acid are boiled for 3 hours, then cooled, the precipitate is filtered and washed with water. The output of 4.3 g (83%), so pl. 274-275 ° С (decon. From aqueous alcohol).

Найдено, %: С 42,27, 42,44; Н 1,82, ,92; F 36,70. 36,50. Found,%: C 42.27, 42.44; H 1.82, 92; F 36.70. 36.50.

Sl 6 6 2 2Вычислено , %: С 42,30;:-;, Н 1,93; F 36,53.Sl 6 6 2 2Calculated,%: C 42.30;: - ;, H 1.93; F 36.53.

Claims (1)

Формула изобретени Invention Formula Способ получени  0 -(бензимицазолил-2 ) перфторкарбоновых кислот общей формулыThe method of obtaining 0 - (benzimizazolyl-2) perfluorocarboxylic acids of the general formula С° где ft 2 или 3, отличающийс   тем, что, с целью повышени  степени чистоты и выхода целевого продукта, о-аминоанилицы амнаов перфтордикарбоновых кислот кип т т с сол ной кислотой с последующим выделением целевого продукта. C ° where ft 2 or 3, characterized in that, in order to increase the purity and yield of the target product, the o-aminoanilines of perfluorocarboxylic acid amnes are boiled with hydrochloric acid, followed by isolation of the target product.
SU2076929A 1974-11-22 1974-11-22 The method of obtaining - / benzimidazolyl-2 / perfluorocarboxylic acids SU505639A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU2076929A SU505639A1 (en) 1974-11-22 1974-11-22 The method of obtaining - / benzimidazolyl-2 / perfluorocarboxylic acids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU2076929A SU505639A1 (en) 1974-11-22 1974-11-22 The method of obtaining - / benzimidazolyl-2 / perfluorocarboxylic acids

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SU505639A1 true SU505639A1 (en) 1976-03-05

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