HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 334449Generated: October 24, 2026
Sodium Carbonate → 3-Isoquinolinecarboxylic acid, 4-hydroxy-1-methyl-7-phenoxy-, methyl ester
https://huagongshe.com/en/reaction/334449
Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Sodium Carbonate | HCID 10340 | — |
| Reactant | Methyl 1-(acetoxymethyl)-4-hydroxy-7-phenoxyisoquinoline-3-carboxylate | HCID 86709145 | — |
| Catalyst | Palladium | HCID 23938 | — |
| Solvent | Ethyl Acetate | HCID 8857 | — |
| Product | 3-Isoquinolinecarboxylic acid, 4-hydroxy-1-methyl-7-phenoxy-, methyl ester | HCID 71244895 | 90% |
Reaction Steps
A reactor was charged with 1c (16.0 g), Pd/C (2.08 g), anhydrous Na2CO3 (2.56 g) and ethyl acetate (120 mL). The flask was vacuum-purged with nitrogen (3×) and vacuum-purged with hydrogen (3×). The flask was then pressurized with hydrogen and stirred at about 60° C. until completion of reaction. The flask was cooled to 20-25° C., the pressure released to ambient, the head space purged with nitrogen three times and mixture was filtered. The filtrate was concentrated. Methanol was added. The mixture was stirred and then cooled. Product precipitated and was filtered and dried in an oven (Yield: 90%, HPLC: 99.7%).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US08883823B2 |
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| Source dataset | uspto-grants-2014_11 |
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| ORD ID | ord-1102260c45194757ba9eac16c267533d |
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| Source note | uspto-grants-2014_11 |
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