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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1845039Generated: October 30, 2026

Ethyl chloroformate → 5-Methylisatoic anhydride

https://huagongshe.com/reaction/1845039

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthyl chloroformateHCID 10928—
Reactant2-Amino-5-methylbenzoic acidHCID 76255—
SolventAcetyl chlorideHCID 6367—
Product5-Methylisatoic anhydrideHCID 29447880%

Reaction Steps

15.1 g (100 mmol) of 2-amino-5-methyl-benzoic acid was refluxed with 60 mL of ethyl chloroformate for 6 h, and then was refluxed for another 3 h after addition of 60 mL of acetyl chloride. The solid was collected, washed with hexane to give 14.2 g (80%) of the 5-methylisatoic anhydride.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08946259B2
Source datasetuspto-grants-2015_02
ORD IDord-245a1f04129f4e37a5b66208ef7715e9
Source noteuspto-grants-2015_02