HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 128455Generated: October 25, 2026
Acetic Acid → [1-(p-Nitrophenyl)-1H-1,2,4-triazol-5-yl]pyrazine
https://huagongshe.com/reaction/128455
Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Acetic Acid | HCID 176 | — |
| Reactant | (4-Nitrophenyl)hydrazine | HCID 3310889 | — |
| Reactant | N-[(Dimethylamino)methylene]pyrazine-2-carboxamide | HCID 16727655 | — |
| Solvent | 1,4-Dioxane | HCID 31275 | — |
| Product | [1-(p-Nitrophenyl)-1H-1,2,4-triazol-5-yl]pyrazine | HCID 12850299 | — |
Reaction Steps
10.0 g. of portion of N-(dimethylaminomethylene)-pyrazine carboxamide is added to a mixture of 10.3 g. of 4-nitrophenylhydrazine, 200 ml. of acetic acid and 50 ml. of p-dioxane. The mixture is heated at 90° C. for 5 hours and evaporated to dryness in vacuo. The residue is recrystallized from ethanol giving 9.0 g. of the desired product as tan crystals, mp. 188°-189° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US04259504 |
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| Source dataset | uspto-grants-1981_03 |
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| ORD ID | ord-bf6a7bfd2ff04a65b4f96bb5fa6e9a17 |
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| Source note | uspto-grants-1981_03 |
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