2,6-DIAMINO-3,5-DINITROPYRIDINE synthesis
- Product Name:2,6-DIAMINO-3,5-DINITROPYRIDINE
- CAS Number:34981-11-8
- Molecular formula:C5H5N5O4
- Molecular Weight:199.12
141-86-6
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Yield:34981-11-8 99%
Reaction Conditions:
with dinitrogen pentoxide in dichloromethane at 27 - 31; for 0.0166667 h;Cooling with ice;Temperature;
Steps:
1.2; 2.2; 3.2; 4.2; 5.2; 6.2
(2) The ultrafine HZSM-5 catalyst having a particle diameter of 0.5-1 μm is blown into the outlet channel of the Y-type microchannel reactor to obtain a modified Y-type microchannel reactor having an ultrafine HZSM-5 catalyst content of 0.5 wt%. The modified Y-type microchannel reactor is then placed in an ice water bath, an inlet of the Y-type microchannel reactor is passed with 2,6-diaminopyridine, after the temperature of the 2,6-diaminopyridine is stabilized, the other inlet of the Y-type microchannel reactor is dissolved in dichloromethane containing 0.14 g/mL of dinitrogen pentoxide. 2,6-diaminopyridine at a flow rate of 0.14 mL/min and a dichloromethane solution containing dinitrogen pentoxide with a flow rate of 0.13 mL/min are accelerated to 0.17 mL/min and 0.20 mL/min, respectively, and with 27 ° C / min the temperature is raised to 31 ° C insulation reaction. The contact time of 2,6-diaminopyridine and dichloromethane solution containing dinitrogen pentoxide is 60 s to obtain crude 2,6-diamino-3,5-dinitropyridine. (3) The crude diaminodinitropyridine is dissolved in water and recrystallized in an alkaline environment. It is filtered, dried, and add to distilled water to boil, and then subjected to secondary crystallization from dimethyl sulfoxide to obtain 2,6-diamino-3,5-dinitropyridine. [0050]
References:
CN109369518,2019,A Location in patent:Page/Page column 6-9
1158646-15-1
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