| abstract |
2-(Cyclic amino)-3,5-diaminopyridine derivatives (I) are new. Also new are dinitropyridine derivative intermediates (II). Triaminopyridines of formula (I) and their acid addition salts are new. [Image] R 1halo, T (optionally substituted (os) by one or more of OH, COOH, COOT, carboxamido, SO 2T, OT, NHSO 2T and/or NR 3R 4), COOH, COOT, carboxamido, (1-4C) alkylcarboxamido, SO 2H, SO 2T,(1-4C) alkylsulfonamido, OH, OT, 2-4C hydroxyalkoxy, aminoalkoxy, mono- or diaminoalkoxy, ST, SOT, SO 3H or NR 5R 6; T : 1-4C alkyl; R 2 - R 6H, SO 2T, COT (os by one or more OH), arylcarbonyl (os by OH, OT, NH 2, NHT or NT 2), carboxamido or T (os by one or more of OH, OT, SO 2T, (1-4C) alkylsulfonamido, COOH, carboxamido, SOT, NH 2, NHT, NT 2 and/or 2-4C mono- or polyhydroxyalkylamino); R 2H or OT (os by one or more of OH, OMe and/or OEt); n : 0-7; m : 0-2; Y : O, C(R 8) 2 or NR 7; R 7as for R 3; R 8H or as for R 1. Independent claims are included for: (1) new dinitropyridine derivative intermediates of formula (II); and (2) dyeing compositions (A) comprising a suitable medium containing at least one compound (I) (or its salt) as coupler and at least one oxidation base (III). [Image]. |