Pyrogallol → 9,10-Anthracenedione, 1-amino-4,5-dihydroxy-8-nitro-

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

50 parts of o-dichlorobenzene, 8.25 parts of 1,8-dinitro-4,5-dihydroxyanthraquinone and 3.5 parts of pyrogallol are heated for 3 hours at 150° C while stirring. Then 3.5 parts of pyrogallol is introduced and the reaction mixture is heated for another 7 hours at 150° C. After the reaction mixture has been cooled to 60° C it is diluted with 120 parts of methanol and cooled to ambient temperature. The precipitated reduction product is suction filtered, washed with methanol and hot water and dried. 5.3 parts of 1-amino-8-nitro-4,5-dihydroxyanthraquinone is obtained.

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