SU467073A1 - The method of obtaining piperazine - Google Patents
The method of obtaining piperazineInfo
- Publication number
- SU467073A1 SU467073A1 SU1976085A SU1976085A SU467073A1 SU 467073 A1 SU467073 A1 SU 467073A1 SU 1976085 A SU1976085 A SU 1976085A SU 1976085 A SU1976085 A SU 1976085A SU 467073 A1 SU467073 A1 SU 467073A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- ammonia
- elements
- starting amine
- piperazine
- starting
- Prior art date
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- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
1one
Изобретение относитс к усовершенствованию способа получени пиперазина, который широко используетс в медицине.The invention relates to the improvement of the method of producing piperazine, which is widely used in medicine.
Известен способ синтеза ииперазина из диэтилентриамипа или другого олигомера этилеидиамина путем деаминоциклизации последних при повышенной температуре и давлении на поверхности никелевого катализатора , представл юш,его собой никель, нанесенный на окислы элементов V и VI групп периодической системы. Выход пиперазииа от прореагировавшего диэтилентриамина составл ет 65-70%, от теории - 79-84%.A known method for the synthesis of ipiperazine from diethylenetriamip or another ethylenediamine oligomer by deaminocycling the latter at elevated temperature and pressure on the surface of the nickel catalyst is niche deposited on the oxides of the elements of the V and VI groups of the periodic system. The yield of piperazia from reacted diethylenetriamine is 65-70%, from theory - 79-84%.
Дл повышени селективности процесса и выхода целевого продукта (91-92% от теории ) предлагаетс усовершенствованный способ получени пиперазина путем деаминоциклизации диэтилентриамина или других олигомеров этилендиамина на никелевом катализаторе , нанесенном на окислы элементов V или VI групп периодической системы элементов при повышенной температуре под давлением с последуюш,им выделением целевого продукта известным приемом, заключающийс в том, что в исходный продукт ввод т аммиак в количестве не более 3% в расчете на исходный амин.To increase the selectivity of the process and the yield of the target product (91-92% of theory), an improved method for producing piperazine by deaminating cyclodehyde triamine or other ethylene diamine oligomers on nickel catalyst deposited on the oxides of elements V or VI of the periodic system of elements at elevated temperature under pressure followed by , by extracting the target product by a known technique, which consists in introducing ammonia in an amount of not more than 3% of the starting product .
Рекомендуетс вводить в реакционную смесь аммиак в количестве 1 -1,5%, счита на исходный амин, в виде раствора аммиака в исходном амине.It is recommended to introduce ammonia in the amount of 1 -1.5% into the reaction mixture, calculated on the starting amine, as an ammonia solution in the starting amine.
Процесс обычно провод т в проточном автоклаве при 40 атм в среде водорода при 180-260Т.The process is usually carried out in a flow autoclave at 40 atm in a hydrogen atmosphere at 180-260T.
Пример 1. В проточном реакторе при 185°С и давлении 40 атм через стационарный слой катализатора при времени контакта 0,9 ч пропускают 100 г сырь , содержащего 98,0 г диэтилентриамина и 2,0 г растворенного в нем аммиака. Получают 98,0 г катализата , содержащего 55,0 г пиперазииа, 16,0 г этилеидиамина , 26,0 г диэтилеитриамина и 1,0 г иолиэтилениолиаминов (потери 2%). Конверси 73,5%. Выход пнперазина, счита на прореагировавший диэтилентриамин 76,5%. Выход от теории 92,0%.Example 1. In a flow reactor at 185 ° C and a pressure of 40 atm, 100 g of raw materials containing 98.0 g of diethylenetriamine and 2.0 g of ammonia dissolved in it are passed through a fixed catalyst bed at a contact time of 0.9 h. 98.0 g of catalysate are obtained, containing 55.0 g of piperazia, 16.0 g of ethylenediamine, 26.0 g of diethylethiriamine and 1.0 g of ethylene ethylene oligamine (loss of 2%). Conversion 73.5%. The output of pnperazina, counting on the reacted diethylenetriamine 76.5%. The yield from the theory is 92.0%.
Пример 2. В проточном реакторе при 210°С и давлении 40 атм через стационарный слой катализатора при времени контакта 0,9ч пропускают 100,0 г сырь , содержащего 98,0 г диэтилеитриамина и 2,0 г растворенного в нем аммиака. Получают 96,0 г катализата, содержащего 70,0 г пиперазина, 15,0 г этилендиамина , 5,0 г диэтилентриамина и 6,0 г полиэтиленполиаминов (потери 4%). Конверси 95%. Выход пиперазина, счита на прореагировавший диэтилен триамии 75,7%. Выход от теории 91,0%.Example 2. In a flow reactor at 210 ° C and a pressure of 40 atm, 100.0 g of raw materials containing 98.0 g of diethyleetriamine and 2.0 g of ammonia dissolved in it are passed through a fixed catalyst bed with a contact time of 0.9 h. 96.0 g of catalysate are obtained, containing 70.0 g of piperazine, 15.0 g of ethylene diamine, 5.0 g of diethylenetriamine and 6.0 g of polyethylene polyamines (loss of 4%). Conversion 95%. The output of piperazine, counting on the reacted diethylene of triamium 75.7%. The yield from the theory is 91.0%.
Предмет изобретени Subject invention
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1976085A SU467073A1 (en) | 1973-12-10 | 1973-12-10 | The method of obtaining piperazine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1976085A SU467073A1 (en) | 1973-12-10 | 1973-12-10 | The method of obtaining piperazine |
Publications (1)
Publication Number | Publication Date |
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SU467073A1 true SU467073A1 (en) | 1975-04-15 |
Family
ID=20569442
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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SU1976085A SU467073A1 (en) | 1973-12-10 | 1973-12-10 | The method of obtaining piperazine |
Country Status (1)
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SU (1) | SU467073A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6603003B2 (en) | 2000-11-07 | 2003-08-05 | Sun Pharmaceutical Industries Ltd | Method for the preparation of piperazine and its derivatives |
-
1973
- 1973-12-10 SU SU1976085A patent/SU467073A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6603003B2 (en) | 2000-11-07 | 2003-08-05 | Sun Pharmaceutical Industries Ltd | Method for the preparation of piperazine and its derivatives |
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