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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 272538Generated: October 26, 2026

Hydrochloric Acid → [2-(4-Cyclopentyl-piperazin-1-yl)-pyridin-4-yl]-methyl-amine hydrochloride

https://huagongshe.com/reaction/272538

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantN-[2-(4-Cyclopentyl-piperazin-1-yl)-pyridin-4-yl]-N-methyl-acetamideHCID 68942069—
SolventWaterHCID 962—
Solvent1,4-DioxaneHCID 31275—
Product[2-(4-Cyclopentyl-piperazin-1-yl)-pyridin-4-yl]-methyl-amine hydrochlorideHCID 6894210772%

Reaction Steps

A mixture of 3.3 g (11 mmol) N-[2-(4-cyclopentyl-piperazin-1-yl)-pyridin-4-yl]-N-methyl-acetamide and 12 ml 4N HCl in 5 ml water and 25 ml dioxane was stirred at room temperature. After evaporation of the volatiles the residue was triturated with a mixture formed from acetone and dioxane and dried under vacuum to yield 2.3 g (72%) of the title compound (intermediate 10) as off-white solid. MS: (m/e): 261.2 (MH+).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07456175B2
Source datasetuspto-grants-2008_11
ORD IDord-41e5b8040ba640d598d84bcefb939f2d
Source noteuspto-grants-2008_11