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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 588637Generated: October 30, 2026

Phthalic Anhydride → HCID 178514955, compound

https://huagongshe.com/reaction/588637

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPhthalic AnhydrideHCID 6811—
Reactant3-Amino-5-phenylpyrazoleHCID 136655—
SolventAcetic AcidHCID 176—
SolventWaterHCID 962—
ProductHCID 178514955HCID 17851495591%

Reaction Conditions

Temperature120 °C

Reaction Steps

A mixture of 3-phenyl-1H-pyrazol-5-amine (6 g, 0.038 mol), phthalic anhydride (5.6 g, 0.038 mol) in acetic acid (60 mL) was heated at 100° C. for 2 h and at 120° C. for 2 h and cooled to room temperature. The reaction mixture was diluted with water and the suspension was filtered. The collected solid was washed with water, dried, yielding the title compound as a solid (10 g).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09227976B2
Source datasetuspto-grants-2016_01
ORD IDord-b160697bea504340b0300f6b54b2afbd
Source noteuspto-grants-2016_01