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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1677634Generated: October 31, 2026

Hydrazine hydrate (1:1) → HCID 178509212, compound

https://huagongshe.com/reaction/1677634

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrazine hydrate (1:1)HCID 24654—
ReactantHCID 178493245HCID 178493245—
ProductHCID 178509212HCID 178509212—

Reaction Conditions

Temperature140 °C

Reaction Steps

A mixture of 1.2 g of 2-hydroxy-4-methoxynicotinonitrile and 30 mL of hydrazine hydrate is maintained at 140° C. for 18 hours in a bomb. The reaction medium is then evaporated to dryness. The residue is taken up in ethyl ether, and the resulting suspension is filtered. 1.1 g of 3-amino-1H-pyrazolo[4,3-c]pyrid-4-ol are obtained in the form of a grey solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08008322B2
Source datasetuspto-grants-2011_08
ORD IDord-281f9f25c49a4228b31eb5f97cee0eb1
Source noteuspto-grants-2011_08