HuagongsheHuagongshe Chemistry Print Report · For research reference only
Hydrochloric Acid → 5-Amino-1-methyl-4-nitrosopyrazole
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Hydrochloric Acid | HCID 313 | — |
| Reactant | 2-Methyl-2H-pyrazol-3-ylamine | HCID 136927 | — |
| Reactant | Sodium Nitrite | HCID 23668193 | — |
| Solvent | Water | HCID 962 | — |
| Product | 5-Amino-1-methyl-4-nitrosopyrazole | HCID 12851580 | 100.2% |
Reaction Conditions
| Temperature | 5 °C |
|---|
Reaction Steps
To a solution of 5-amino-1-methylpyrazole (100 g) in water (700 ml) were added concentrated hydrochloric acid (86 ml) and sodium nitrite (63.9 g) in water (200 ml) at a temperature below 10° C. The reaction mixture was stirred at 5° C. for 30 minutes. The precipitated solid was collected by filtration and dried to give 5-amino-1-methyl-4-nitrosopyrazole (117 g).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US07192943B2 |
| Source dataset | uspto-grants-2007_03 |
| ORD ID | ord-38877f95a28d41dda80e601e3877c64e |
| Source note | uspto-grants-2007_03 |