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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 522525Generated: October 29, 2026

Hydrochloric Acid → HCID 51000409, compound

https://huagongshe.com/reaction/522525

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantLithium HydroxideHCID 3939—
ReactantMethyl 3-amino-6-(4-(methylsulfonyl)phenyl)pyrazine-2-carboxylateHCID 51000410—
SolventMethanolHCID 887—
SolventWaterHCID 962—
ProductHCID 51000409HCID 5100040999%

Reaction Conditions

Temperature90 °C

Reaction Steps

A mixture of methyl 3-amino-6-(4-methylsulfonylphenyl)pyrazine-2-carboxylate (3.5 g, 11.39 mmol) and lithium hydroxide (1.364 g, 56.95 mmol) in MeOH (13.70 mL) and H2O (13.70 mL) was heated to 90° C. for 2 hours. The reaction mixture was allowed to cool and neutralised with aqueous HCl, and the resultant precipitate collected by filtration (3.32 g, 99% Yield). 1H NMR (400.0 MHz, DMSO) δ 3.25 (s, 3H), 7.70 (br s, 2H), 8.00 (d, J=8.5 Hz, 2H), 8.35 (d, J=8.5 Hz, 2H), 9.03 (s, 1H) and 13.20 (br s, 1H) ppm; MS (ES+) 294.00.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09334244B2
Source datasetuspto-grants-2016_05
ORD IDord-25852f9fb8db4d41abcc008453c0a36c
Source noteuspto-grants-2016_05