HuagongsheHuagongshe Chemistry Print Report · For research reference only
Potassium Hydroxide → 5-(5-Chloro-2-oxo-1,2-dihydroindol-3-ylidenemethyl)-4-methyl-1H-pyrrole-2-carboxylic acid
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Potassium Hydroxide | HCID 14797 | — |
| Reactant | 5-(5-Chloro-2-oxo-1,2-dihydroindol-3-ylidenemethyl)-4-methyl-1H-pyrrole-2-carboxylic acid ethyl ester | HCID 67281073 | — |
| Solvent | Ethanol | HCID 702 | — |
| Solvent | Methanol | HCID 887 | — |
| Product | 5-(5-Chloro-2-oxo-1,2-dihydroindol-3-ylidenemethyl)-4-methyl-1H-pyrrole-2-carboxylic acid | HCID 67281293 | 72.3% |
Reaction Steps
A mixture of 5-(5-chloro-2-oxo-1,2-dihydroindol-3-ylidenemethyl)-4-methyl-1H-pyrrole-2-carboxylic acid ethyl ester (1.3 g, 4 mmol) and potassium hydroxide in methanol (25 mL) and ethanol (25 mL) was heated to reflux for overnight. Insoluble materials were removed by filtration and the mixture was neutralized with 6N hydrochloric acid to give 0.876 g (70%) of the title compound.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US06878733B1 |
| Source dataset | uspto-grants-2005_04 |
| ORD ID | ord-ecfc1fa491314fc6a97956b7caf8acc1 |
| Source note | uspto-grants-2005_04 |