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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2183461Generated: November 4, 2026

Hydrochloric Acid → (S)-1-[3-(pyrazin-2-yloxy)-phenyl]-ethylamine

https://huagongshe.com/reaction/2183461

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantHCID 60004116HCID 60004116—
Solvent1,4-DioxaneHCID 31275—
Product(S)-1-[3-(pyrazin-2-yloxy)-phenyl]-ethylamineHCID 6000413785.2%

Reaction Conditions

Temperature50 °C

Reaction Steps

A mixture of (S)-{1-[3-(pyrazin-2-yloxy)-phenyl]-ethyl}-carbamic acid tert-butyl ester (1.33 g, 4.2 mmol), dioxane (20 mL) and HCl (4.2 mL, 4N) was stirred at 50° C. for 5 h and concentrated in vacuo. CH2Cl2 (50 mL) was added and the reaction mixture was basified with NaOH (5N) followed by extraction with CH2Cl2 (2×50 mL). The organic layer was washed with brine (50 mL), dried over anhydrous magnesium sulfate and filtered, and the filtrate was concentrated to give the title compound (0.77 g, 85% yield).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06900210B2
Source datasetuspto-grants-2005_05
ORD IDord-372f248e6d3541dda5ff46ae3950e3c4
Source noteuspto-grants-2005_05