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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1862786Generated: November 1, 2026

Phthalic Anhydride → HCID 23008051, compound

https://huagongshe.com/reaction/1862786

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPhthalic AnhydrideHCID 6811—
Reactant(Z)-3,4-dichloro-N'-hydroxybenzimidamideHCID 71446900—
SolventWaterHCID 962—
ProductHCID 23008051HCID 2300805115.1%

Reaction Conditions

Temperature90 °C

Reaction Steps

A mixture of 14.17 g (0.0691 mol) of 3,4-dichlorobenzamide oxime and 10.24 g (0.0691 mol) of phthalic anhydride was heated gently with stirring to about 90° C., at which time a very vigorous exotherm carried the temperature to above 170° C.; the mixture was cooled in water to 130° C. and held at 130° C. for a few minutes, and then was cooled to 25° C. The mixture was extracted with 1 liter of ethanol and was filtered to give 3.5 g of insoluble solid, mp 200°-215° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04166732
Source datasetuspto-grants-1979_09
ORD IDord-19dfa1366e0e4b1baa26d2f317db7c01
Source noteuspto-grants-1979_09