HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1481682Generated: October 30, 2026
Lithium hydroxide, monohydrate → HCID 71284456, compound
https://huagongshe.com/reaction/1481682
Participants
| Role | Name | HCID | Charge |
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| Reactant | Lithium hydroxide, monohydrate | HCID 168937 | — |
| Reactant | HCID 71284791 | HCID 71284791 | — |
| Solvent | Water | HCID 962 | — |
| Solvent | Tetrahydrofuran | HCID 8028 | — |
| Product | HCID 71284456 | HCID 71284456 | 63.9% |
Reaction Steps
To a suspension of methyl 5-ethyl-6-(1-methyl-1,2,3,4-tetrahydroquinolin-6-yl)-2-oxo-1,2-dihydropyridine-3-carboxylate (200 mg, 0.61 mmol) in THF (1 mL) and H2O (1 mL) was added LiOH—H2O (85 mg, 2.03 mmol, 3.3 eq) at room temperature. The reaction mixture was heated to 65° C. and stirred for 1 h. The reaction was monitored by LC-MS. Upon complete consumption of starting material, the reaction was quenched with 1N HCl (2 mL). The precipitate was collected by filtration then washed with Et2O to afford the title compound as a yellow solid (121 mg, 0.39 mmol, 14% over three steps).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US09409905B2 |
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| Source dataset | uspto-grants-2016_08 |
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| ORD ID | ord-4f1afa430bdd4f8c9e28be484b172f05 |
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| Source note | uspto-grants-2016_08 |
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