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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 622346Generated: October 30, 2026

Diphosgene → Isatoic Anhydride

https://huagongshe.com/reaction/622346

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDiphosgeneHCID 10426—
ReactantAnthranilic acid, hydrochlorideHCID 74985—
Solvent1,4-DioxaneHCID 31275—
ProductIsatoic AnhydrideHCID 8359—

Reaction Steps

7.5 g of 2-amino benzoic acid hydrochloride was mixed with 10 ml of diphosgene and the mixture was stirred in 150 ml of dioxane for 40 minutes at reflux. The resulting mixture was cooled and filtered. Yield: 5.7 g of title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04771051
Source datasetuspto-grants-1988_09
ORD IDord-e86f8072299c45e784bcf15e86d0aed2
Source noteuspto-grants-1988_09