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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1889016Generated: October 30, 2026

Hydrazine hydrate (1:1) → HCID 55280958, compound

https://huagongshe.com/reaction/1889016

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrazine hydrate (1:1)HCID 24654—
ReactantMethyl 4-fluorosalicylateHCID 2775386—
SolventMethanolHCID 887—
ProductHCID 55280958HCID 55280958—

Reaction Conditions

Temperature80 °C

Reaction Steps

To a solution of methyl 4-fluorosalicylate (500 mg, 2.94 mmol, commercially available from e.g. Apollo, Alfa Aesar or ABCR) in methanol (15 ml) stirred under argon at room temp was added neat hydrazine monohydrate (0.722 ml, 14.69 mmol). The reaction mixture was stirred at 80° C. for 18 hr. The reaction mixture was concentrated in vacuo and partitioned between ethyl acetate (˜50 ml) and water (˜25 ml). The aqueous phase was extracted with ethyl acetate (2×25 ml) and the combined organic extracts washed with brine (25 ml), dried over sodium sulphate, evaporated in vacuo and dried (vacuum oven, 40° C., 24 hr) to afford the crude product as an off-white solid in 385 mg.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08501946B2
Source datasetuspto-grants-2013_08
ORD IDord-a1f0567e95484d4fbd36428b7522d1c7
Source noteuspto-grants-2013_08