benzo[a]naphth[2,3-h]acridine-5,8,13(14H)-trione

Preparation

(a) 1-Chloro-9,10-dioxo-9,10-dihydroanthracene-2-carboxylic acid in the presence of copper with Naphthalen-2-amine?condensation, cyclization, (b) 1-(2-naphthyl amino)-anthraquinone-2-carbonyl chloride?in 1,2,4 – Trichlorobenzene in heating; (C) 1-Nitro-9,10-dioxo-9,10-dihydroanthracene-2-carboxylic acid and Naphthalen-2-amine?and arsenic trichloride in 1, 2 – Dichlorobenzene in heating; (d) 2-Aminonaphthalene-1-sulfonic acid and 1-Chloro-9,10-dioxo-9,10-dihydroanthracene-2-carboxylic acid?condensation, heating (200 ~ 210 ℃) cyclization, and at the same time, remove sulfonic group.

Properties and Applications

dark red. Slightly soluble in Pyridine , 1, 2, 3, 4 – Tetrahydronaphthalene and Xylene. In concentrated sulfuric acid to red light yellow, dilution after red precipitation; In the basic insurance powder solution for blue light red; In the acidic insurance powder solution for dark orange.