| 摘要 |
NEW MATERIAL:An anthraquinone compound of the formula (where X is H, a halogen, an alkyl, an alkoxyl, amino, nitro or -CH=CH-CH=CH-; Y is H, a halogen, an alkyl or an alkoxyl). EXAMPLE:6-Hydroxy-8-thia-13-aza-naphtho[2,3a]-5,14-anthraquinone [II]. PREPARATION:A solution of 2-aminothiophenol and potassium hydroxide in ethanol is added to a solution of 2-bromoquinizarine in ethanol. The reaction product is recrystallized from ethanol to give 2-(2'-aminophenylthio)quinizarine. This compound is dispersed in o-dichorobenzene and, in the presence of anhydrous zinc chloride, is caused to react by heating to give a cyclic product, which is recrystallized from chloroform to obtain the objective compound [II].
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