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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 490312Generated: October 30, 2026

Hydrazine hydrate (1:1) → HCID 178526464, compound

https://huagongshe.com/reaction/490312

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrazine hydrate (1:1)HCID 24654—
ReactantMethyl 2-fluoro-4-nitrobenzoateHCID 3013872—
SolventEthanolHCID 702—
ProductHCID 178526464HCID 17852646430.9%

Reaction Steps

2-Fluoro-4-nitrobenzoic acid methyl ester (5 g, 25.11 mmol) and hydrazine hydrate (1.34 ml, 27.62 mmol) were dissolved in 250 ml of ethanol and heated under reflux for 11 h. A further 0.26 ml of hydrazine hydrate were added and heated under reflux for a further 6 h, and the mixture was concentrated and ethyl acetate and water were added. The precipitated residue was filtered off with suction and dried. Purification by preparative HPLC (PR18, acetonitrile/water 0.1% TFA) resulted in 1.39 g of product, M+H+: 180.05.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07528155B2
Source datasetuspto-grants-2009_05
ORD IDord-3dba0618625249d08a951b4b74fccaa1
Source noteuspto-grants-2009_05