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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1475867Generated: October 31, 2026

Lithium hydroxide, monohydrate → HCID 67248550, compound

https://huagongshe.com/reaction/1475867

Reaction equation

Participants

RoleNameHCIDCharge
ReactantLithium hydroxide, monohydrateHCID 168937—
Reactantethyl 2-methyl-4-(3-methyl-2-oxo-4-phenylpyridin-1(2H)-yl)-2-(methylsulfonyl)butanoateHCID 67248376—
SolventHydrochloric AcidHCID 313—
SolventMethanol tetrahydrofuran waterHCID 21892291—
ProductHCID 67248550HCID 67248550—

Reaction Steps

To a solution of ethyl 2-methyl-4-(3-methyl-2-oxo-4-phenylpyridin-1(2H)-yl)-2-(methylsulfonyl)butanoate (118.3 mg, 0.313 mmol) in tetrahydrofuran/methanol/water (4:1:1, 3.13 mL) was added lithium hydroxide monohydrate (26.3 mg, 0.626 mmol). The mixture was stirred at ambient temperature overnight. The mixture was diluted with aqueous HCl (1N in water) and extracted with ethyl acetate 2×. The combined organic extracts were dried over magnesium sulfate, filtered and concentrated to dryness to afford 2-methyl-4-(3-methyl-2-oxo-4-phenylpyridin-1(2H)-yl)-2-(methylsulfonyl)butanoic acid as a solid. 109.4 mg.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09018384B2
Source datasetuspto-grants-2015_04
ORD IDord-3a31da9812554639a6436c9e3cdbec1d
Source noteuspto-grants-2015_04