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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1481682Generated: October 30, 2026

Lithium hydroxide, monohydrate → HCID 71284456, compound

https://huagongshe.com/reaction/1481682

Reaction equation

Participants

RoleNameHCIDCharge
ReactantLithium hydroxide, monohydrateHCID 168937—
ReactantHCID 71284791HCID 71284791—
SolventWaterHCID 962—
SolventTetrahydrofuranHCID 8028—
ProductHCID 71284456HCID 7128445663.9%

Reaction Conditions

Temperature65 °C

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

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09409905B2
Source datasetuspto-grants-2016_08
ORD IDord-4f1afa430bdd4f8c9e28be484b172f05
Source noteuspto-grants-2016_08