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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 50577Generated: October 26, 2026

Sodium hydride → 1-(Pyrazin-2-yl)-1H-imidazole-4-carbaldehyde

https://huagongshe.com/reaction/50577

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSodium hydrideHCID 24758—
ReactantChloropyrazineHCID 73277—
Reactant1H-Imidazole-4-carbaldehydeHCID 76428—
SolventDimethylformamideHCID 6228—
Product1-(Pyrazin-2-yl)-1H-imidazole-4-carbaldehydeHCID 2273518399.4%

Reaction Conditions

Temperature0 °C

Reaction Steps

Sodium hydride (60% in oil, 720 mg, 18.0 mmol) was added to a 0° C. solution of 1H-imidazole-4-carboxaldehyde (2.20 g, 18.0 mmol) in DMF (8 mL). After stirring for 20 min at 0° C., the mixture was allowed to warm to RT and a solution of 2-chloropyrazine (2.06 g, 17.9 mmol) in DMF (4 mL) was added. The resulting mixture was heated to 100° C. for 18 h. The solvent was evaporated, the residue was dissolved in ethyl acetate, washed with water and brine, dried (MgSO4), and concentrated to provide 3.10 g (86%) of the title compound. MS 175 (M+H)+

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06713455B2
Source datasetuspto-grants-2004_03
ORD IDord-0326d4b48151442e9091b15321845211
Source noteuspto-grants-2004_03