HuagongsheHuagongshe Chemistry Print Report · For research reference only
Hydrochloric Acid → 5-amino-1-(5-cyclopropylcarbamoyl-2-methylphenyl)-1H-pyrazole-4-carboxylic acid
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Hydrochloric Acid | HCID 313 | — |
| Reactant | Lithium Hydroxide | HCID 3939 | — |
| Reactant | 3-[5-Amino-4-(2-methoxy-benzoyl)-pyrazol-1-yl]-N-cyclopropyl-4-methyl-benzamide | HCID 11452105 | — |
| Solvent | Water ethanol | HCID 19096565 | — |
| Product | 5-amino-1-(5-cyclopropylcarbamoyl-2-methylphenyl)-1H-pyrazole-4-carboxylic acid | HCID 58088954 | 88% |
Reaction Steps
A solution of 5-amino-1-(5-cyclopropylcarbamoyl-2-methyl-phenyl)-1H-pyrazole-4-carboxylic acid ethyl ester (1.0 g, see Example 44), LiOH (1.2 g) in water/ethanol (15 ml/20 ml) was heated at 50° C. overnight. The solution was neutralized with dilute HCl (2M), and extracted with ethyl acetate (200 ml×2), dried over Na2SO4. The solvent was evaporated under reduced pressure and ethyl acetate and diethyl ether was added. The resulting solid was filtered to give the desired 5-amino-1-(5-cyclopropylcarbamoyl-2-methylphenyl)-1H-pyrazole-4-carboxylic acid. (0.8 g; yield: 88%.).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US08410160B2 |
| Source dataset | uspto-grants-2013_04 |
| ORD ID | ord-3fc3583dbac9450387ed82a75e7f03c7 |
| Source note | uspto-grants-2013_04 |