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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1778191Generated: October 31, 2026

Water → 2-Chloro-3-hydrazinopyrazine

https://huagongshe.com/reaction/1778191

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantHydrazine hydrate (1:1)HCID 24654—
Reactant2,3-DichloropyrazineHCID 78575—
SolventEthanolHCID 702—
Product2-Chloro-3-hydrazinopyrazineHCID 321430—

Reaction Conditions

Temperature80 °C

Reaction Steps

2,3-Dichloropyrazine A-1 (15 g; 100.68 mmol) and hydrazine hydrate 65% (15.509 ml; 201.37 mmol) are dissolved in 45 ml ethanol and stirred for 1 h at 80° C. While cooling down, a precipitate is formed. It is slurred up with a small amount of water and filtered off. It is washed with water and then dried to afford the product.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09266891B2
Source datasetuspto-grants-2016_02
ORD IDord-99215cfa3c204fa0bfc699aadc7b2d05
Source noteuspto-grants-2016_02