HuagongsheHuagongshe Chemistry Print Report · For research reference only
Sodium Hydroxide → 6-(4-Bromo-2-chloro-phenylamino)-7-fluoro-3H-benzoimidazole-5-carboxylic acid
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Sodium Hydroxide | HCID 14798 | — |
| Reactant | Methyl 6-((4-bromo-2-chlorophenyl)amino)-7-fluoro-1H-benzo[d]imidazole-5-carboxylate | HCID 11749905 | — |
| Solvent | Hydrochloric Acid | HCID 313 | — |
| Solvent | Ethanol | HCID 702 | — |
| Solvent | Water | HCID 962 | — |
| Solvent | Ethyl Acetate | HCID 8857 | — |
| Product | 6-(4-Bromo-2-chloro-phenylamino)-7-fluoro-3H-benzoimidazole-5-carboxylic acid | HCID 21114158 | 39.2% |
Reaction Steps
6-(4-Bromo-2-chloro-phenylamino)-7-fluoro-3H-benzoimidazole-5-carboxylic acid methyl ester 8b (58 mg, 0.146 mmol) is suspended in EtOH (2 mL) and 1 mL 2 N NaOH is added. After 16 hours, the reaction mixture is diluted with ethyl acetate, water, and 10% HCl solution. The layers are separated and the organic layer is washed with brine. The organic layer is dried (MgSO4) and concentrated under reduced pressure. Trituration with MeOH provides 22 mg (39%) pure desired product.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US07973170B2 |
| Source dataset | uspto-grants-2011_07 |
| ORD ID | ord-9e63b571c20b4f8b9cb134ef2bbd9e9a |
| Source note | uspto-grants-2011_07 |