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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 402004Generated: October 28, 2026

Hydrazine hydrate (1:1) → HCID 178441952, compound

https://huagongshe.com/reaction/402004

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrazine hydrate (1:1)HCID 24654—
Reactant3-(3-Bromo-4-cyclohexyloxy-phenyl)-2-hydroxy-4-oxo-octanoic acid ethyl esterHCID 67375283—
SolventAcetic AcidHCID 176—
ProductHCID 178441952HCID 178441952—

Reaction Conditions

Temperature120 °C

Reaction Steps

A mixture of 3-(3-bromo-4-cyclohexyloxy-phenyl)-2-hydroxy-4-oxo-octanoic acid ethyl ester (4.39 mmol, 2.0 g) and hydrazine hydrate (2.0 mL) in acetic acid (10 mL) was kept stirring at 120° C. for 3 h. The reaction mixture was concentrated under reduced pressure and to the residue was added water, extracted with ethyl acetate dried and concentrated under reduced pressure, dried to provide 5-(3-bromo-4-cyclohexyloxy-phenyl)-6-butyl-pyridazin-3-ol (1.7 g).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08741900B2
Source datasetuspto-grants-2014_06
ORD IDord-e5f9619d1fc74451ab01b82b6a51d373
Source noteuspto-grants-2014_06