SU108587A1 - The method of obtaining 2-mercaptobenzimidazole - Google Patents

The method of obtaining 2-mercaptobenzimidazole

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Publication number
SU108587A1
SU108587A1 SU455437A SU455437A SU108587A1 SU 108587 A1 SU108587 A1 SU 108587A1 SU 455437 A SU455437 A SU 455437A SU 455437 A SU455437 A SU 455437A SU 108587 A1 SU108587 A1 SU 108587A1
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SU
USSR - Soviet Union
Prior art keywords
mercaptobenzimidazole
carbon disulfide
obtaining
nitroaniline
sodium
Prior art date
Application number
SU455437A
Other languages
Russian (ru)
Inventor
А.С. Ларионова
Original Assignee
А.С. Ларионова
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.)
Filing date
Publication date
Application filed by А.С. Ларионова filed Critical А.С. Ларионова
Priority to SU455437A priority Critical patent/SU108587A1/en
Application granted granted Critical
Publication of SU108587A1 publication Critical patent/SU108587A1/en

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Description

Известные методы производства 2-меркаптобензимидазола основаны на двух раздельно выполн емых стади х химических преврашеин, а именно:The known methods for the production of 2-mercaptobenzimidazole are based on two separately performed stages of chemical derivatives, namely:

1)воссгановление сернистым натром исходного о-нитроанилина до о-фениленднамина;1) recovery of the initial o-nitroaniline to o-phenylendnamine with sulfurous sodium;

2)взаимодействие о-фенплендиамина с сероуглеродом.2) the interaction of o-phenlendiamine with carbon disulfide.

Эти способы не обеспечивают получени-  целевого нродукга с высокими выходами.These methods do not provide a targeted target for high yields.

Описываемым изобретением предлагаетс  способ получени  2-Mej)каптобензимидазола , за ключа юпи1йс  в том, что процесс проводитс  в одну стадию как единьи химический процесс путем взаимодействи  о-питроанилина со смесью сернистого натри  и сероуглерода.The invention describes a method for the preparation of 2-Mej) captobenzimidazole, for the key that the process is carried out in one stage as the same chemical process by reacting o-pitroaniline with a mixture of sodium sulphide and carbon disulfide.

В этом случае сероуглерод взаимодействует с о-фенилендиамином в момент его образовани , что предотвращает его осмоление.In this case, carbon disulfide interacts with o-phenylenediamine at the time of its formation, which prevents its tarring.

По предлагаемому способу целеBoii продукт получаетс  с выходом 80 - ,, от теории.According to the proposed method celeBoii, the product is obtained with the release of 80 - from the theory.

П р и м е р. В автоклав загружают 23 г сернистого натри  в видеPRI me R. 23 g of sodium sulphide are loaded into the autoclave as

15 /о-ного раствора, 62 г о-нитроанилина , 27 г едкого натра в виде 40/о-ного раствора и 41 г сероуглерода . Смесь нагревают при размешивании до 108-110 и при этой температуре выдерживают 4-6 часов.15 / on-th solution, 62 g of o-nitroaniline, 27 g of caustic soda in the form of 40 / on-th solution and 41 g of carbon disulfide. The mixture is heated with stirring to 108-110 and kept at this temperature for 4-6 hours.

По окончании выдержки к реакционной массе при температуре 97-98 прибавл ют 150 M.I раствора бисульфита натри  с концентрацией около 500 г в литре.At the end of the exposure, 150 M. I of sodium bisulfite solution with a concentration of about 500 g per liter is added to the reaction mass at a temperature of 97-98.

Выпавший 2-меркаптобензимидазол отфильтровывают, промывают водой до исчезновепи  реакции на тиосульфат в промывной воде и подвергают очистке /(юбым из известных способов.The precipitated 2-mercaptobenzimidazole is filtered off, washed with water until the reaction to thiosulfate disappears in the wash water and purified / (known method.

Про д м е т изобретен и нInvented in and out

Способ получени  2-мерка1ггобензимндазола на основе о-нитроанилина , сернистого натри  и сероуглерода в присутствии П1елочи. о т л и ч а ю П1, и ii с   тем, что, с упрощени  процесса, о-нитроанилин , сероуглерод, ссрнистьп натрий ц тцелочь нагревают совместно под давлением.The method of obtaining 2-mercgum benzimndazole based on o-nitroaniline, sodium sulphide and carbon disulfide in the presence of pelochie. This is due to the fact that, with the simplification of the process, o-nitroaniline, carbon disulfide, sodium sulphate, the hydrochloride are heated together under pressure.

SU455437A 1956-03-20 1956-03-20 The method of obtaining 2-mercaptobenzimidazole SU108587A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU455437A SU108587A1 (en) 1956-03-20 1956-03-20 The method of obtaining 2-mercaptobenzimidazole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU455437A SU108587A1 (en) 1956-03-20 1956-03-20 The method of obtaining 2-mercaptobenzimidazole

Publications (1)

Publication Number Publication Date
SU108587A1 true SU108587A1 (en) 1956-11-30

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Family Applications (1)

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SU455437A SU108587A1 (en) 1956-03-20 1956-03-20 The method of obtaining 2-mercaptobenzimidazole

Country Status (1)

Country Link
SU (1) SU108587A1 (en)

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