1-Amino-4-arylaminoanthraquinones (II) have been prepared in high yields by reacting 1-amino-4-chloroanthraquinone (Ia, 1 mol) with arylamines (6 mol) and anhyd.AlCl3 (5 mol) in nitrobenzene at room temperature. 1-Amino-2-bromoanthraquinone, 2-amino-1-chloroanthraquinone, 1-benzamido-4-chloroanthraquinone and 1-amino-5-chloroanthraquinone fail to give arylaminated products. 1-Amino-2,4-dibromoanthraquinone (Ic) gives only 4-arylaminated compounds (IIq-s) whereas 1-amino-8-chloroanthraquinone (Ie) gives 2-arylaminated derivatives (III).A plausible mechanism for the reaction has been suggested.The arylaminated compounds have been applied on polyester as disperse dyes and their dyeing properties evaluated.
Philip, George,Nabar, U. T.,Kanetkar, V. R.,Sunthankar, S. V.
p. 808 - 811
(2007/10/02)
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