HuagongsheHuagongshe Chemistry Print Report · For research reference only
Hydrochloric Acid → 3-(1-Methyl-1H-pyrazol-4-yl)-2-(3-oxo-6-pyridin-4-yl-2,3-dihydro-pyridazin-4-yl)-1H-indole-5-carboxylic acid
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Hydrochloric Acid | HCID 313 | — |
| Reactant | Sodium Hydroxide | HCID 14798 | — |
| Reactant | 2-(3-methoxy-6-pyridin-4-yl-pyridazin-4-yl)-3-(1-methyl-1H-pyrazol-4-yl)-1H-indole-5-carboxylic acid ethyl ester | HCID 68638517 | — |
| Solvent | Ethanol | HCID 702 | — |
| Product | 3-(1-Methyl-1H-pyrazol-4-yl)-2-(3-oxo-6-pyridin-4-yl-2,3-dihydro-pyridazin-4-yl)-1H-indole-5-carboxylic acid | HCID 135961873 | — |
Reaction Steps
350 mg of 2-(3-methoxy-6-pyridin-4-yl-pyridazin-4-yl)-3-(1-methyl-1H-pyrazol-4-yl)-1H-indole-5-carboxylic acid ethyl ester is dissolved in 4 ml ethanol and 4 ml aqueous 2N NaOH and heated by microwave irradiation for 10 min at 150° C. The solution is neutralized with aqueous HCl and the product is purified by preparative RP-HPLC eluting with a gradient of 0-100% acetonitrile in water (+0.01% trifluoroacetic acid). Yield 39 mg. LC-MS (ES+) 413 (M+H)+.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US07709466B2 |
| Source dataset | uspto-grants-2010_05 |
| ORD ID | ord-c3f1a7ac690d4d90b358691b612d4587 |
| Source note | uspto-grants-2010_05 |