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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1266915Generated: November 1, 2026

Hydrazine hydrate (1:1) → 3-hydrazinyl-2,5-dimethylPyrazine

https://huagongshe.com/reaction/1266915

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrazine hydrate (1:1)HCID 24654—
Reactant3-Chloro-2,5-dimethylpyrazineHCID 66771—
SolventEthanolHCID 702—
Product3-hydrazinyl-2,5-dimethylPyrazineHCID 1525509527.9%

Reaction Conditions

Temperature50 °C

Reaction Steps

A reaction flask was loaded with 2-chloro-3,6-dimethylpyrazine (10 g) and ethanol (15 ml), and heated up to 50° C. with stirring. To this, a mixture of hydrazine monohydrate (11.2 g) and ethanol (10 ml) was dropwise added in one hour. The temperature was raised to the reflux temperature, followed by stirring for six hours. The heating was stopped and the reaction mixture was condensed by an evaporator. The precipitated crystals were filtrated for collection and dried to give 2-hydrazino-3,6-dimethylpyrazine (2.7 g).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06551682B1
Source datasetuspto-grants-2003_04
ORD IDord-eef0d3536fe644108ea70105a100e44b
Source noteuspto-grants-2003_04