[1,2,5]Oxadiazolo[3,4-b]pyrazine-5,6(1H,3H)-dione(9CI) synthesis
- Product Name:[1,2,5]Oxadiazolo[3,4-b]pyrazine-5,6(1H,3H)-dione(9CI)
- CAS Number:24294-89-1
- Molecular formula:C4H2N4O3
- Molecular Weight:154.08
144-62-7
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Yield:24294-89-1 92%
Reaction Conditions:
with hydrogenchloride in water; for 10 h;Reflux;
Steps:
2 Example 2. Synthesis of Compound 3
A 250 mL round bottom flask was charged with 3,4-diaminofuroxime (30.0 g, 300 mol) and water (150 mL), and oxalic acid (40.0 g, 440 mmol) was stirred and heated as concentrated hydrochloric acid (40.0 mL) to heat up. To reflux, reaction 4h,A large amount of a white solid precipitated on cooling to room temperature was filtered, washed with water and dried to give white floc product 3 (42.8 g, 92%).
References:
CN107501293,2017,A Location in patent:Paragraph 0026; 0027; 0031; 0032