SU108587A1 - The method of obtaining 2-mercaptobenzimidazole - Google Patents
The method of obtaining 2-mercaptobenzimidazoleInfo
- 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
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- mercaptobenzimidazole
- carbon disulfide
- obtaining
- nitroaniline
- sodium
- Prior art date
Links
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
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.
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 |
Family
ID=48381689
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU455437A SU108587A1 (en) | 1956-03-20 | 1956-03-20 | The method of obtaining 2-mercaptobenzimidazole |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU108587A1 (en) |
-
1956
- 1956-03-20 SU SU455437A patent/SU108587A1/en active
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