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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 78560Generated: October 29, 2026

Hydrochloric Acid → HCID 51000409, compound

https://huagongshe.com/reaction/78560

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantWaterHCID 962—
ReactantLithium HydroxideHCID 3939—
ReactantMethyl 3-amino-6-(4-(methylsulfonyl)phenyl)pyrazine-2-carboxylateHCID 51000410—
SolventMethanolHCID 887—
ProductHCID 51000409HCID 5100040999.4%

Reaction Conditions

Temperature90 °C

Reaction Steps

A mixture of methyl 3-amino-6-(4-(methylsulfonyl)phenyl)pyrazine-2-carboxylate (3.50 g, 11.39 mmol) and LiOH (1.364 g, 56.95 mmol) was dissolved in Methanol (14 mL) and water (14 ml) and allowed to heat at 90° C. for 2 hours. The reaction mixture was allowed to cool and neutralized with 1M HCl. The resultant precipitate was collected by filtration to afford the pure product as a yellow solid (3.32 g, 99% Yield). MS (ES+) 293

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08841308B2
Source datasetuspto-grants-2014_09
ORD IDord-113509370dec4c6aa1cb664fa75ed11d
Source noteuspto-grants-2014_09