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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2405916Generated: October 31, 2026

Hydrochloric Acid → HCID 70817619, compound

https://huagongshe.com/reaction/2405916

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantLithium HydroxideHCID 3939—
ReactantHCID 86710232HCID 86710232—
Solvent1,4-DioxaneHCID 31275—
ProductHCID 70817619HCID 70817619100.2%

Reaction Steps

To a solution of ethyl (2R)-4-(4-cyclopentyl-1H-pyrazol-1-yl)-2-methyl-2-(methylsulfonyl)butanoate (100 mg, 0.292 mmol) in dioxane (3 mL) was added a 2M LiOH solution (0.0876 mL, 1.75 mmol, 6 eq). The reaction was allowed to stir overnight at RT. The mixture was then acidified with 1M HCl. The aqueous phase was then extracted with EtOAc, dried (MgSO4), filtered, and concentrated in vacuo to give (2R)-4-(4-cyclopentyl-1H-pyrazol-1-yl)-2-methyl-2-(methylsulfonyl)butanoic acid (92 mg, 100% yield) which was used without further purification. LC-MS M+H+315.1.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08809333B2
Source datasetuspto-grants-2014_08
ORD IDord-503dffab7fb84aac8b0bb7e4ed94abeb
Source noteuspto-grants-2014_08