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CAS No. : | 711007-44-2 | MDL No. : | MFCD09029906 |
Formula : | C7H9N3O | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | NAWJZCSEYBQUGY-UHFFFAOYSA-N |
M.W : | 151.17 | Pubchem ID : | 10487029 |
Synonyms : |
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Signal Word: | Danger | Class: | 6.1 |
Precautionary Statements: | P273-P280-P301+P310 | UN#: | 2811 |
Hazard Statements: | H301-H312+H332-H317-H319-H341-H351-H371-H411 | Packing Group: | Ⅲ |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
0.56 g (5 mmol) of <strong>[37718-11-9]4-pyrazolecarboxylic acid</strong> was stirred with 0.81 g (5 mmol) of carbonyldiimidazole in 20 ml of dimethylformamide at room temp. for 2 hours. 1.12 g (5 mmol) of 2,3-diaminobenzamide in 10 ml of pyridine were added. The reaction mixture was stirred at 50° C. for 2 hours. The reaction mixture was then concentrated in vacuo, and the residue was stirred with water. The precipitate was filtered off and dried in vacuo at 40° C. and then stirred in 10 ml of glacial acetic acid at 100° C. The residue after concentration in vacuo was stirred with saturated sodium bicarbonate solution. After filtration, the filtrate was concentrated with toluene in vacuo several times. The residue was stirred with tetrohydrofuran. Concentration in vacuo resulted in 150 mg of yellow powder. 1H-NMR (D6-DMSO): delta=7.2 (1H), 7.55-7.7 (3H), 7.75 (1H), 8.4 (2H), 9.3 (broad, 1H) ppm. MS: m/e=291 (M+). |