Azo dyes containing a 2-(arylsulphonylamino)-pyrimidine radical and metal complexes thereof
AssigneeSandoz Ltd.
InventorsJordi B. Barra, Jose R. Sorolla
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Abstract
The invention provides a process for the production of azodyes and their derivatives by diazotization and coupling reactions and optionally further modification reactions, wherein a compound of formula ##STR1## in which E signifies an aromatic bivalent radical, X.sub.1 signifies hydroxy or a primary amino group, Y.sub.1 signifies hydroxy or a primary amino group and in which the aminogroup linked to the --SO.sub.2 -bound phenyl radical may optionally be acylated, or a mixture of compounds of formula (I), is employed as a coupling component or/and--in the non-acylated form--as a diazo component, the invention in particular relates also to the novel dyes and their use and to the novel intermediates.
Claims9
A metal complex of at least one compound of formula (IIIa) or a mixture thereof ##STR59## wherein A signifies the radical of a diazo component HO--(CO).sub.n --A.sub.1 --NH.sub.2, in which the substituent --(CO).sub.n --OH is in ortho position to the diazotizable amine group;
- n signifies 0 or 1;
- --A.sub.1 -- is an ortho-bivalent radical or its modified derivative;
- X.sub.1 signifies hydroxy or a primary amino group;
- Y signifies Y.sub.1 or Y';
- Y.sub.1 signifies hydroxy or a primary amino group;
- Y' signifies C.sub.1-4 -alkoxy, a mono- or di-(C.sub.1-4 -alkyl) amino group, an acylamino group or a carboxymethylamino group;
- E signifies an aromatic bivalent radical;
- Z signifies a primary amino group or Z.sub.1 and is in a position meta or para to SO.sub.2 ;
- Z.sub.1 signifies hydroxy, C.sub.1-4 -alkoxy, a mono- or di-(C.sub.1-4 -alkyl)-amino group, an acylamino group, a carboxymethylamino group or a group --N.dbd.N--B;
- and
- B signifies a radical of a coupling component.
Dependencies are inferred from the claim text.