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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1526588Generated: November 4, 2026

Hydrochloric Acid → HCID 53418083, compound

https://huagongshe.com/reaction/1526588

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantSodium HydroxideHCID 14798—
ReactantMethyl 5-chloro-3-methylpyrazine-2-carboxylateHCID 72218580—
Solvent1,4-DioxaneHCID 31275—
ProductHCID 53418083HCID 5341808384.1%

Reaction Steps

A solution of methyl 5-chloro-3-methylpyrazine-2-carboxylate (0.117 g, 0.627 mmol) (Step 3 of Intermediate 24) and sodium hydroxide 5N (0.150 ml, 0.752 mmol) in dioxane (5 mL) was stirred at room temperature for 30 minutes. The reaction mixture was acidified with 2N HCl to pH 4 and extracted with EtOAc (2×). The combined organic extracts were dried over Na2SO4 and the filtrate was concentrated to afford the title compound (91.0 mg, 84%). MS m/z=172.9 (M+H)+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09085576B2
Source datasetuspto-grants-2015_07
ORD IDord-81e51714c09f4691b08837b24911c682
Source noteuspto-grants-2015_07