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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1981157Generated: October 27, 2026

Methanethiol → 2-Amino-5-chloro-3-formyl-6-(methylthio)pyrazine

https://huagongshe.com/reaction/1981157

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethanethiolHCID 878—
ReactantTriethylamineHCID 8471—
Reactant3-Amino-5,6-dichloropyrazine-2-carbaldehydeHCID 13367871—
SolventDimethylformamideHCID 6228—
Product2-Amino-5-chloro-3-formyl-6-(methylthio)pyrazineHCID 13472136—

Reaction Steps

In 3 ml of dimethylformamide there was dissolved 2-amino-5,6-dichloro-3-formylpyrazine (384 mg; 0.002 M), and the solution was cooled in an ice bath. Through the solution there was then bubbled methanethiol gas for 2 minutes. Triethylamine was added, and more methanethiol gas was bubbled through the solution for 3 minutes. The reaction mixture was stirred in the ice bath for 30 minutes and then at room temperature for 30 minutes. The solvent and methanethiol were then removed under nitrogen atmosphere, and the residue was treated with water. The product precipitated, was filtered, and washed with water (333 mg). Elemental Analysis for C6H6N3OSCl.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04512991
Source datasetuspto-grants-1985_04
ORD IDord-fe300df1356443ebab6c4c10cf1e2fd2
Source noteuspto-grants-1985_04