SU68785A2 - Method for simultaneous production of sulfanilide and diphenylurea - Google Patents
Method for simultaneous production of sulfanilide and diphenylureaInfo
- Publication number
- SU68785A2 SU68785A2 SU5206A SU343344A SU68785A2 SU 68785 A2 SU68785 A2 SU 68785A2 SU 5206 A SU5206 A SU 5206A SU 343344 A SU343344 A SU 343344A SU 68785 A2 SU68785 A2 SU 68785A2
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- diphenylurea
- sulfanilide
- simultaneous production
- sulfanilamide
- aniline
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
/- / -
NH-CO-NH-NH-CO-NH-
HjN-SO,- /-HjN-SO, - / -
-NH.,+-NH., +
.S02-11.S02-11
Образовавша с при этом и выделенна из реакционной массы дифенилмочевина (III) путем воздействи на нее хлорсульфановой кислоты может быть превращена в /7 рдисульфохлорид дифенилмочевины (IV) и затем обработкой последнегоDiphenylurea (III) formed from the reaction mass and thus formed can be converted into diphenylurea (IV) diphenylsulfonyl chloride (IV) and then processed by the latter.
)-SOo-NH2+2/ NH,-) -SOo-NH2 + 2 / NH, -
//
-NH-CO-NHIII-NH-CO-NHIII
аммиаком - в исходный р.р-ц,ису ъфамид дифенилмочевины (I), дл возвращени его в предлагаемую реакцию получени белого стрепто цида (II).ammonia - to the original pp, cisu diphenamide of diphenylurea (I), to return it to the proposed reaction to produce white streptocide (II).
Таким образом, как это видно из следующей схемы, предлагаемыйThus, as can be seen from the following scheme, the proposed
63 HjN.SOt- -NH-CO-NH-( -/)-Nl4-CO-NH-/3 SO,()-NHIV63 HjN.SOt- -NH-CO-NH- (- /) - Nl4-CO-NH- / 3 SO, () - NHIV
способ не только дает возможность получать сульфаниламид без ацилирующих веществ, но и позвол ет регенерировать первоначальный исходный продукт (дифенилмочевину ), что сокращает число стадий обычного процесса с четырех до трех.the method not only makes it possible to obtain sulfanilamide without acylating substances, but also allows the initial starting product (diphenylurea) to be regenerated, which reduces the number of stages of the usual process from four to three.
Пример 1. Получение сульфаниламида (белого стрептоцида).Example 1. Production of sulfanilamide (white streptocide).
5 г / /о-дисульфамида дифенилмочевины нагревают в течение 3 часов с анилином. По окончании реакции избыток анилина отгон ют с вод ным паром. Гор чий раствор отфильтровывают , и оставшийс на фильтре осадок еще раз извлекают кип чением5 g of / / o-disulfonam diphenylurea is heated for 3 hours with aniline. At the end of the reaction, an excess of aniline is distilled off with steam. The hot solution is filtered, and the residue on the filter is again removed by boiling.
с водой, и раствор отфильтровывают. Выпавшее из объединенных маточников вещество плавитс при температуре 164° С и не дает депрессии с сульфаниламидом. Осадок плавитс при температуре 235° С и не дает депрессии с дифенилмочевиной.with water, and the solution is filtered. The substance precipitated from the combined mother liquors melts at a temperature of 164 ° C and does not give depression with sulfanilamide. The residue melts at 235 ° C and does not give depression to diphenylurea.
Предмет изобретени Subject invention
Применение способа, описанного в авторском свидетельстве JV 68784, дл одновременного получени сульфаниламида и дифенилмочевины действием анилина на /7 / -дисульфамид дифенилмочевины при повышенной температуре. -SO2NH2 H2N.SOJ,-( ЫНз+-. CO-NH-/ HIUse of the method described in copyright certificate JV 68784 for the simultaneous production of sulfanilamide and diphenylurea by the action of aniline on (7) -disulfamide of diphenylurea at elevated temperature. -SO2NH2 H2N.SOJ, - (LN3 + -. CO-NH- / HI
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU5206A SU68785A2 (en) | 1946-02-20 | 1946-02-20 | Method for simultaneous production of sulfanilide and diphenylurea |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU5206A SU68785A2 (en) | 1946-02-20 | 1946-02-20 | Method for simultaneous production of sulfanilide and diphenylurea |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU68785A2 true SU68785A2 (en) | 1946-11-30 |
Family
ID=52780731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU5206A SU68785A2 (en) | 1946-02-20 | 1946-02-20 | Method for simultaneous production of sulfanilide and diphenylurea |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU68785A2 (en) |
-
1946
- 1946-02-20 SU SU5206A patent/SU68785A2/en active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| SU11248A1 (en) | Anthracene cleaning method | |
| GB1101771A (en) | Improvements relating to the production of gypsum plaster | |
| SU68785A2 (en) | Method for simultaneous production of sulfanilide and diphenylurea | |
| GB1115592A (en) | Process for liberating acrylamide from acrylamide sulphate | |
| GB883319A (en) | Improvements in or relating to the production of cyanamide | |
| SU140801A1 (en) | The method of obtaining amino acids | |
| GB534733A (en) | Improvements in or relating to the manufacture of dichlorethylene | |
| GB650341A (en) | Method for the production of amido sulphonic acid | |
| SU64306A1 (en) | The method of producing sulfonamide | |
| US2416607A (en) | Method of preparing fluoroacetamide | |
| SU68532A2 (en) | The method of obtaining film-forming material | |
| SU164597A1 (en) | ||
| SU60202A1 (en) | Method for producing ethyleneimics | |
| SU145243A1 (en) | Method for preparing 4- and 5-hydroxybenz-2,1,3-thiodiazoles | |
| GB1174378A (en) | Preparation of Alkali Metal Aminocarboxylates. | |
| SU67264A1 (en) | Method for processing weak soda liquids | |
| US2549456A (en) | Manufacture of glutamic acid | |
| SU151326A1 (en) | Method for producing ethylenediaminetetraacetic acid | |
| SU72463A2 (en) | Method for producing apomorphine | |
| SU52052A1 (en) | The method of obtaining sodium hydrosulfite | |
| SU147183A1 (en) | The method of producing diamide perfluorglutaric acid | |
| SU92183A1 (en) | Two-phase method of hydrolysis of wood acid | |
| SU833454A1 (en) | Mica purification method | |
| GB470468A (en) | Improvements in the manufacture and production of ureas from alpha-omega-diaminocarboxylic acids | |
| SU133886A1 (en) | Method for preparing 4-amino-2,4-dimethyl-delta-2-tetrahydro-6-pyridone-4-carboxyl amide |