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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1050554Generated: October 29, 2026

Hydrochloric Acid → 4-(1-Cyclopentylpiperidin-4-yl)aniline hydrochloride

https://huagongshe.com/reaction/1050554

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactant1-Cyclopentyl-4-(4-nitrophenyl)piperidineHCID 118114758—
ReactantHCID 178418361HCID 178418361—
CatalystPalladiumHCID 23938—
SolventIsopropanolHCID 3776—
Product4-(1-Cyclopentylpiperidin-4-yl)aniline hydrochlorideHCID 11811466060%

Reaction Steps

1-Cyclopentyl-4-(4-nitrophenyl)piperidine (303) (6.5 g, 24 mmol) was dissolved in IPA (70 mL) and 2M HCl (aq) (18 mL), and 10% Pd/C (2 g) was added. The resulting mixture was agitated on Parr shaker under 50 psi hydrogen for 18 hours. The reaction mixture was filtered through celite, and the solvent was removed under reduced pressure to give 4-(1-cyclopentylpiperidin-4-yl)aniline hydrochloride (304) (4.0 g, 14 mmol, 60% yield).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09382246B2
Source datasetuspto-grants-2016_07
ORD IDord-80bb468f16184f54bab786b28aa2a70c
Source noteuspto-grants-2016_07