5-Aminotetrazole synthesis
- Product Name:5-Aminotetrazole
- CAS Number:4418-61-5
- Molecular formula:CH3N5
- Molecular Weight:85.07
79-17-4
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Yield:4418-61-5 161.5 g
Reaction Conditions:
with hydrogenchloride;sodium hydroxide;sodium nitrite in water at 80; for 4 h;Temperature;
Steps:
1; 2; 3 Example 2
Add 180 ml of water to a 2000 ml three-necked flask.Add lime nitrogen several times80.0 g (1.0 mol), maintaining the reaction temperature at 50 ° C, adding 200 g of sulfuric acid (80% content) dropwise, and dropping for one hour, the reaction was carried out for 4 hours. After the reaction is completed,The reaction solution was filtered, and 150 g (3.0 mol) of hydrazine hydrate and 200 g of hydrochloric acid (concentration: 36%) were added to a 2000 ml three-necked flask, and the temperature was raised to 80 ° C, and then the filtered reaction solution was added dropwise thereto, and the reaction was allowed to fall to room temperature after 3 hours. Then, 200 g of hydrochloric acid (concentration: 36%) was added dropwise, then 200 g of sodium nitrite was added, and after adding 100 g of sodium hydroxide, the temperature was raised to 80 ° C, and after reacting for 4 hours, it was cooled to room temperature, filtered, and dried.161.5 g of 5-aminotetrazole product was obtained in a yield of 95%.
References:
CN109761925,2019,A Location in patent:Paragraph 0028; 0029; 0030
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