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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1820279Generated: November 2, 2026

Hydrochloric Acid → (R)-1-((S)-4-(4-chlorophenyl)-4-hydroxy-3,3-dimethylpiperidin-1-yl)-1-oxobutan-2-aminium chloride

https://huagongshe.com/reaction/1820279

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantHCID 57888904HCID 57888904—
Solvent1,4-DioxaneHCID 31275—
Product(R)-1-((S)-4-(4-chlorophenyl)-4-hydroxy-3,3-dimethylpiperidin-1-yl)-1-oxobutan-2-aminium chlorideHCID 86614930—

Reaction Steps

tert-Butyl (R)-1-((S)-4-(4-chlorophenyl)-4-hydroxy-3,3-dimethylpiperidin-1-yl)-1-oxobutan-2-ylcarbamate (200 mg, 0.46 mmol) and 4 N Hydrochloric acid in dioxane (8 mL) was stirred at rt for 2 hrs. The reaction mixture was then concentrated and dried under high vacuum to yield the product, which was used in next step without further purification.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07601844B2
Source datasetuspto-grants-2009_10
ORD IDord-ab1a6cd6cf29499e8176d97a9bc59c6f
Source noteuspto-grants-2009_10