HuagongsheHuagongshe Chemistry Print Report · For research reference only
Sulfuric Acid → HCID 131717044, compound
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Sulfuric Acid | HCID 1118 | — |
| Reactant | 1H-Pyrazol-4-amine, 1-methyl-5-nitro- | HCID 588333 | — |
| Catalyst | Palladium | HCID 23938 | — |
| Solvent | Methanol | HCID 887 | — |
| Product | HCID 131717044 | HCID 131717044 | — |
Reaction Steps
200 mg (1.41 mmoles) of 4-amino-1-methyl-5-nitropyrazol are hydrated in 50 ml absolute methanol with catalytic quantities of palladium/carbon at room temperature and 30 bar. The hydration is terminated at 17 hours. A colorless precipitate is precipitated out of the filtrated solution when adding 135 mg (1.41 mmoles) of concentrated sulfuric acid, which precipitate is removed by suction and recrystallized from water.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US05061289 |
| Source dataset | uspto-grants-1991_10 |
| ORD ID | ord-931fcbfa664e43b1a79c4f6f35836439 |
| Source note | uspto-grants-1991_10 |