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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2189731Generated: October 31, 2026

Hydrazine hydrate (1:1) → 1H-Indazole-5-carbonitrile

https://huagongshe.com/reaction/2189731

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrazine hydrate (1:1)HCID 24654—
Reactant5-Cyano-2-fluorobenzaldehydeHCID 10909725—
Product1H-Indazole-5-carbonitrileHCID 11126384—

Reaction Steps

2-fluoro-5-cyanobenzaldehyde (1.1 g) is dissolved in hydrazine hydrate (19 ml) and stirred at room temperature for 18 hours. The solution is then distilled and the residue purified by flash column chromatography on silica, eluting with DCM. This gives the title compound (300 mg).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08324254B2
Source datasetuspto-grants-2012_12
ORD IDord-d10481a21fe3425bbb45c19dd6a9df86
Source noteuspto-grants-2012_12