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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1018930Generated: October 30, 2026

Hydrazine → HCID 178518901, compound

https://huagongshe.com/reaction/1018930

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrazineHCID 9321—
ReactantHCID 70156286HCID 70156286—
SolventEthanolHCID 702—
ProductHCID 178518901HCID 178518901—

Reaction Steps

A 3M-solution of hydrazine (20 ml, 60 mmol) in ethanol is added to the solution of crude 2-(2-pyridylcarbonyl)benzoic acid hydrochloride(4.54 g, 20 mmol), and the mixture is stirred at room temperature for 5 hours. Precipitation yields 1-hydroxy-4-(2-pyridyl)phthalazine.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06486158B1
Source datasetuspto-grants-2002_11
ORD IDord-332e4dfa61344752b4adb8c97ba514d9
Source noteuspto-grants-2002_11