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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 424409Generated: October 29, 2026

Hydrazine hydrate (1:1) → 1-Chloro-4-hydrazinophthalazine

https://huagongshe.com/reaction/424409

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrazine hydrate (1:1)HCID 24654—
Reactant1,4-DichlorophthalazineHCID 78490—
SolventEthanolHCID 702—
Product1-Chloro-4-hydrazinophthalazineHCID 2793752—

Reaction Steps

10 g commercially available dichlorophthalazine are added portionwise at 90° C. to a solution of 50 ml ethanol and 20 ml hydrazine hydrate. After 10 min the reaction mixture is cooled to ambient temperature, the precipitate is filtered with suction and rinsed with ethanol to yield 8.4 g of the title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08106047B2
Source datasetuspto-grants-2012_01
ORD IDord-893d30f7cb2342949dd6297b5f3e6bde
Source noteuspto-grants-2012_01