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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1750500Generated: November 4, 2026

Hydrochloric Acid → (1S,2S)-1-N-Methyl-1-N-[5-(trifluoromethyl)pyrazin-2-yl]cyclopentane-1,2-diamine hydrochloride

https://huagongshe.com/reaction/1750500

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactant1,4-DioxaneHCID 31275—
Reactanttert-Butyl N-[(1S,2S)-2-{[3-methyl-5-(trifluoromethyl)pyrazin-2-yl]amino}cyclopentyl]carbamateHCID 118308261—
SolventMethanolHCID 887—
Product(1S,2S)-1-N-Methyl-1-N-[5-(trifluoromethyl)pyrazin-2-yl]cyclopentane-1,2-diamine hydrochlorideHCID 118308127—

Reaction Steps

To a solution of tert-butyl N-[(1S,2S)-2-{[3-methyl-5-(trifluoromethyl)pyrazin-2-yl]amino}cyclopentyl]carbamate (480 mg, 1.332 mmol) in methanol (5 ml) was added HCl in 1,4-dioxane (4 M, 3.33 ml, 13.32 mmol). The reaction was stirred at room temperature overnight and then concentrated in vacuo, azeotropically distilled with toluene to afford the title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09156829B2
Source datasetuspto-grants-2015_10
ORD IDord-e0a6fbbe63ad405995005a973b29e01b
Source noteuspto-grants-2015_10