| 摘要 |
Naphthalene-1,4,5,8-tetracarboxylic acid and typical derivative(s) thereof is (are) prepared by oxidation of periacenaphthindenones of the formula <IMAGE> where R is H or lower alkyl, in a lower aliphatic carboxylic acid with nitric acid, optionally using also oxygen, in the presence of oxidation catalysts at temperatures above about 100 DEG C; the reaction product being worked up in known manner. Naphthalene-1,4,5,8-tetracarboxylic acid is an important preliminary product for the manufacture of dyestuffs.
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