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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1294891Generated: October 30, 2026

2,2',4,4'-Tetrahydroxybenzophenone → 680610-92-8

https://huagongshe.com/reaction/1294891

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2,2',4,4'-TetrahydroxybenzophenoneHCID 8571—
ReactantHydrazine, ethyl-, ethanedioate (1:1)HCID 96181—
ReactantSodium AcetateHCID 517045—
SolventWaterHCID 962—
Product680610-92-8HCID 13543818318.5%

Reaction Conditions

Temperature90 °C

Reaction Steps

A mixture of 2,2′,4,4′-tetrahydroxybenzophenone (0.123 g, 0.5 mmol), sodium acetate (0.164 g, 2.0 mmol) and ethylhydrazine oxalate (0.30 g, 2.0 mmol) in 2 mL H2O was heated at 90° C. overnight. The cooled reaction mixture was partitioned with EtOAc and 1 N HCl. The organic layer was dried (Na2SO4) and concentrated in vacuo to give the crude product. The residue was purified by HPLC chromatography using a silica gel column 150×12 mm (Biotage) at 10 mL/min with methyl-t-butyl ether/hexane (1:3, v/v) to give 0.025 g of product as an off-white solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07241791B2
Source datasetuspto-grants-2007_07
ORD IDord-dc67e9203fff41a18b54546c4f0e6355
Source noteuspto-grants-2007_07