Synthesis of dyes from 1-amino-2,4-dichloroanthraquinone (cas 13432-32-1)

Add time:07/27/2019    Source:sciencedirect.com

A method for the synthesis of 1-amino-2,4-dichloroanthraquinone of very high purity is described, involving chlorination with gaseous chlorine of 1-aminoanthraquinone in boiling aliphatic organic solvents.The 1-amino-2,4-dichloroanthraquinone thus obtained was used in the synthesis of blue acid dyestuffs by condensation with various arylamines, followed by sulfonation with oleum.The resulting dyes had similar spectrophotometric and application properties to those of the analogous derivatives of 1-amino-2,4-dibromoanthraquinone.

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