Preparation of arylaminohydroxyanthraquinones

Details Preparation of arylaminohydroxyanthraquinones Preparation of arylaminohydroxyanthraquinones

C - Chemistry, Metallurgy

09

B

C09B 1/514 (2006.01) C07C 221/00 (2006.01) C07C 225/36 (2006.01)

Patent

CA 2314639

The novel process for preparing arylaminohydroxyanthraquinone of the formula Image where the substituents are each as defined in the description, by reacting appropriate chlorohydroxyanthraquinone of the formula Image where the substituents are each as defined in the description, with an amine of the formula (III) Image where Ar is as defined in the description is characterized in that one mole of amine of the formula (III) plus an excess of 10 to 100% based on one mole of amine is used per chlorine atom in the compounds of the formula (II) and tine reaction is carried out in an inert solvent in the presence of a base selected from the group consisting of the carbonates of the alkali and alkaline earth metals, the acetates of the alkali metals, the phosphates of the alkali metals and any mixtures thereof.

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