HuagongsheHuagongshe Chemistry Print Report · For research reference only
Hydrochloric Acid → 3-Chloro-5-[(1H-indazol-4-ylmethyl)-carbamoyl]-thiophene-2-carboxylic acid
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Hydrochloric Acid | HCID 313 | — |
| Reactant | Tetrahydrofuran | HCID 8028 | — |
| Reactant | Lithium hydroxide, monohydrate | HCID 168937 | — |
| Reactant | 3-Chloro-5-[(1H-indazol-4-ylmethyl)-carbamoyl]-thiophene-2-carboxylic acid methyl ester | HCID 68226749 | — |
| Solvent | Water | HCID 962 | — |
| Product | 3-Chloro-5-[(1H-indazol-4-ylmethyl)-carbamoyl]-thiophene-2-carboxylic acid | HCID 68226733 | — |
Reaction Steps
A mixture of 3-Chloro-5-[(1H-indazol-4-ylmethyl)-carbamoyl]-thiophene-2-carboxylic acid methyl ester (73 mg, 0.21 mmol), lithium hydroxide monohydrate (88 mg, 2.09 mmol), THF (6 mL) and water (6 mL) was stirred 15 h, acidified with 1N HCl and extracted with EtOAc (×3). The organic extracts were combined, washed with brine, dried over sodium sulfate, filtered and evaporated to give the title compound, 80 mg (100%). MS m/e 335.8 (M+H+).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US08404859B2 |
| Source dataset | uspto-grants-2013_03 |
| ORD ID | ord-23f4adf816a942349ec1ac3859ba046f |
| Source note | uspto-grants-2013_03 |