Abstract
Reaction of N-substituted-1,8-dihydroxy-4,5-diaminoanthraquinones with arylamines in the presence of boric acid affords the pertinent 1-aminated derivatives. Replacement of the α-hydroxy group is dependent, in asymmetric 4,5-diaminated derivatives, on the relative basicity of the different amino substituents. The influence of the relative orientation of amino, alkylamino and arylamino substituents on the colour of the products is reported.
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