Water → Chlorthal

Participants

Reaction Steps

In Examples 1 to 3, the hydrolysis of 2,3,5, 6-tetrachloro-1,4-benzenedicarboxamide occurred in sulfuric acid containing fuming sulfuric acid even in the absence of 2 mol, stoichiometric amount, of water added from outside per mol of 2,3,5,6-tetrachloro-1, 4-benzenedicarboxamide, and the reaction proceeded at 180° C. or lower temperatures, thereby forming desired 2,3,5,6-tetrachloro-1,4-benzenedicarboxylic acid.

Provenance & Evidence