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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1281221Generated: October 29, 2026

Water → Chlorthal

https://huagongshe.com/reaction/1281221

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantSulfuric AcidHCID 1118—
Reactant2,3,5,6-tetrachloro-1,4-benzenedicarboxamideHCID 11324087—
ProductChlorthalHCID 16493—

Reaction Steps

In the hydrolysis of 2,3,5,6-tetrachloro-1, 4-benzenedicarboxamide, as is apparent from Examples 4 and 5, the maximum reduction of the amount of water in sulfuric acid resulted in efficiently forming desired 2,3,5,6-tetrachloro-1,4-benzenedicarboxylic acid by heating 2,3,5,6-tetrachloro-1,4-benzenedicarboxamide at 180 or 130° C. for 7 or 27 hr.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06452046B2
Source datasetuspto-grants-2002_09
ORD IDord-cd675f3a0acd4764bca6237d1da57827
Source noteuspto-grants-2002_09