HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 839226Generated: October 27, 2026
Sulfuric Acid → 3-(5-Nitrofuran-2-yl)-1-phenyl-1H-pyrazole-4-carboxamide
https://huagongshe.com/reaction/839226
Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Sulfuric Acid | HCID 1118 | — |
| Reactant | 3-(5-Nitrofuran-2-yl)-1-phenyl-1H-pyrazole-4-carbonitrile | HCID 20326158 | — |
| Solvent | Water | HCID 962 | — |
| Product | 3-(5-Nitrofuran-2-yl)-1-phenyl-1H-pyrazole-4-carboxamide | HCID 20326123 | 98% |
Reaction Steps
Add 29.4 g of 3-(5-nitro-2-furyl)-1-phenylpyrazole-4-carbonitrile to 59 ml of concentrated sulfuric acid while stirring and maintaining the temperature at 40° C for 5 hours. Pour the solution onto 500 g of ice and water. Seperate the formed precipitate by vacuum filtration and wash it with water until it is neutral to obtain a 98% yield of 3-(5-nitro-2-furyl)-1-phenylpyrazole-4-carboxamide [m.p. 236° to 238° C (from dimethylformamide/methanol)].
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US04093812 |
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| Source dataset | uspto-grants-1978_06 |
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| ORD ID | ord-3f2c95f255a44df88e20b197d4a7191d |
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| Source note | uspto-grants-1978_06 |
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