HuagongsheHuagongshe Chemistry Print Report · For research reference only
Pentanenitrile, 4,4-dimethyl-3-oxo- → 3-(1,1-difluoroethyl)-1-(4-methoxyphenyl)-1H-pyrazol-5-amine
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Pentanenitrile, 4,4-dimethyl-3-oxo- | HCID 108871 | — |
| Reactant | 2,4-Dimethylphenylhydrazine hydrochloride | HCID 16213059 | — |
| Reactant | HCID 86653534 | HCID 86653534 | — |
| Product | 3-(1,1-difluoroethyl)-1-(4-methoxyphenyl)-1H-pyrazol-5-amine | HCID 66875898 | 11% |
Reaction Steps
Following the procedure for Example 282A Step 1, substituting p-methoxyphenylhydrazine for 2,4-dimethylphenylhydrazine hydrochloride and 4,4-difluoro-3-oxopentanenitrile was substituted for 4,4-Dimethyl-3-oxopentanenitrile. Concentration and purification using silica gel chromatography eluting with EtOAc/hexanes (5-40%) afforded 3-(1,1-difluoroethyl)-1-(4-methoxyphenyl)-1H-pyrazol-5-amine in 11% yield. LC-MS (ESI) m/z 254 (M+H)+.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US08969587B2 |
| Source dataset | uspto-grants-2015_03 |
| ORD ID | ord-fef92e49370c476888c5a840033c090c |
| Source note | uspto-grants-2015_03 |