SU70496A1 - The method of purification of N'-2 '(4', 6'-ditetilpyrididyl) -N4-acylsulfonyl - Google Patents

The method of purification of N'-2 '(4', 6'-ditetilpyrididyl) -N4-acylsulfonyl

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Publication number
SU70496A1
SU70496A1 SU5309A SU5309A SU70496A1 SU 70496 A1 SU70496 A1 SU 70496A1 SU 5309 A SU5309 A SU 5309A SU 5309 A SU5309 A SU 5309A SU 70496 A1 SU70496 A1 SU 70496A1
Authority
SU
USSR - Soviet Union
Prior art keywords
purification
acylsulfonyl
ditetilpyrididyl
dimethylpyrimidyl
sulfanilamide
Prior art date
Application number
SU5309A
Other languages
Russian (ru)
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SU69474A1 (en
Inventor
В.А. Михалев
Н.В. Савицкая
Н.В. Савицка
А.А. Червякова
кова А.А. Черв
Original Assignee
В.А. Михалев
Н.В. Савицкая
Н.В. Савицка
А.А. Червякова
кова А.А. Черв
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by В.А. Михалев, Н.В. Савицкая, Н.В. Савицка, А.А. Червякова, кова А.А. Черв filed Critical В.А. Михалев
Priority to SU5309A priority Critical patent/SU70496A1/en
Application granted granted Critical
Publication of SU69474A1 publication Critical patent/SU69474A1/en
Publication of SU70496A1 publication Critical patent/SU70496A1/en

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  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)

Description

Очистка N-2 (4, б-диметилпиримидил )-сульфаниламида представ л ет большие трудности, а потери при очистке достигают 40-50%.Purification of N-2 (4, b-dimethylpyrimidyl) sulfanilamide presents great difficulties, and losses during purification reach 40–50%.

Устаиовлено, что удобнее и выгоднее проводить очистку промежуточного продукта N-2 (4, б-диметилпиримидил )- N- ацилсульфаниламида . Этим достигаетс  значительное уменьшение потерь и повышение качества конечного продукта.It was established that it is more convenient and more profitable to clean the intermediate product N-2 (4, b-dimethylpyrimidyl) - N-acylsulfonamide. This achieves a significant reduction in losses and an increase in the quality of the final product.

Очистка производитс  следующим образом.Cleaning is performed as follows.

Выделенный из реакционной массы продукт конденсации 4, 6-диметил-2-аминопиримидина и хлорангидрида N-ацилсульфаниловой кислоты раствор ют в слабом водном растворе аммиака, соды, поташа или какого-либо другого вещества основного характера с рН не более 11,5. В этих услови х в раствор переходит только N-2 (4, б-диметилпиримидил ) - N -ацилсульфаниламид , а все смолы и побочные продукты конденсации остаютс  нерастворенными . Дл  полноты очисткиThe condensation product of 4,6-dimethyl-2-aminopyrimidine and N-acylsulfanilic acid chloride isolated from the reaction mass is dissolved in a weak aqueous solution of ammonia, soda, potash, or some other basic substance with a pH of not more than 11.5. Under these conditions, only N-2 (4, b-dimethylpyrimidyl) -N-acylsulfanilamide goes into solution, and all the resins and condensation by-products remain undissolved. For complete cleaning

от смол и удобства фильтрации в раствор добавл ют активированный уголь. Фильтрат подкисл ют, а выпавший продукт без какойлибо дальнейшей обработки подвергают омылению, что ведет к получению N-2 (4, б-диметилпиримидил )-сульфаниламида высокого качества .from tar and filtration convenience, activated carbon is added to the solution. The filtrate is acidified, and the precipitated product without any further processing is subjected to saponification, which leads to high quality N-2 (4, b-dimethylpyrimidyl) sulfanilamide.

Пример. 14 г технического N-2 (4, б-диметилпиримидил) -М -карбометоксисульфаниламида раствор ют при нагревании до 60-70° в ПО мл 5%-ного водного аммиака, добавл ют 1-2 г угл , перемешивают 1 час, фильтруют, осторожно подкисл ют сол ной кислотой до слабокислой реакции и омыл ют кип чением с 6%-ным едким натром. Получают 7-7,5 г N-2 (4, бдиметилпиримидил ) -сульфаниламида (сульфомезатина ).Example. 14 g of technical N-2 (4, b-dimethylpyrimidyl) -M -carbomethoxy sulfanilamide is dissolved by heating to 60-70 ° in PO ml of 5% aqueous ammonia, 1-2 g of carbon is added, stirred for 1 hour, filtered, It is carefully acidified with hydrochloric acid until slightly acidic, and is washed by boiling with 6% sodium hydroxide. 7-7.5 g of N-2 (4, bdimethylpyrimidyl) sulfanilamide (sulfomesatin) are obtained.

Предмет изобретени Subject invention

Способ очистки N-2 (4, б-диметилпиримидил ) - N -ацилсульфанил.69The purification method of N-2 (4, b-dimethylpyrimidyl) - N-acylsulfonyl.69

SU5309A 1946-06-28 1946-06-28 The method of purification of N'-2 '(4', 6'-ditetilpyrididyl) -N4-acylsulfonyl SU70496A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU5309A SU70496A1 (en) 1946-06-28 1946-06-28 The method of purification of N'-2 '(4', 6'-ditetilpyrididyl) -N4-acylsulfonyl

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU5309A SU70496A1 (en) 1946-06-28 1946-06-28 The method of purification of N'-2 '(4', 6'-ditetilpyrididyl) -N4-acylsulfonyl

Publications (2)

Publication Number Publication Date
SU69474A1 SU69474A1 (en) 1947-10-31
SU70496A1 true SU70496A1 (en) 1947-11-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2640135C2 (en) * 2016-02-03 2017-12-26 Открытое акционерное общество "Ирбитский химико-фармацевтический завод" Method for sulfanilamide (streptocide) production

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2640135C2 (en) * 2016-02-03 2017-12-26 Открытое акционерное общество "Ирбитский химико-фармацевтический завод" Method for sulfanilamide (streptocide) production

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