Azo dyestuffs derived from polycyclo-hetercyclic coupler components
AssigneeBayer Aktiengesellschaft
InventorsDieter vor der Bruck, Hans-Joachim Kabbe
Life of this patent
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Abstract
Dyestuffs of the formula D--N.dbd.N--A I in which D represents the radical of a diazo component and A represents the radical of a coupling component of the formulae ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 designate hydrogen or non-ionic radicals, R designates hydrogen or an optionally substituted alkyl, cycloalkyl, aryl, aralkyl or heterocyclic radical, X designates OH or ##STR2## T designates the remaining members of a fused-on ring and Y and Z designate hydrogen, optionally substituted alkyl or optionally substituted aryl, processes for their preparation and process for pigmenting organic material using the dyestuffs of the formula I.
Claims8
Dyestuffs of the formula
- D--N.dbd.N--A I
- in which
- D represents the radical of a diazo component and
- A represents the radical of a coupling component of the formula ##STR160## wherein R.sub.1, R.sub.2 and R.sub.3 represent hydrogen or non-ionic radicals,
- R represents hydrogen or an optionally substituted alkyl, cycloalkyl, aryl, aralkyl or heterocyclic radical,
- X represents OH or ##STR161## T represents the remaining members of a fused-on ring and Y and Z represent hydrogen, optionally substituted alkyl or optionally substituted aryl.
Dyestuffs of the formula ##STR168## wherein R.sub.1 ", R.sub.2 " and R.sub.3 " represent hydrogen, chlorine, methyl, methoxy, ethoxy, nitro or cyano,
- R.sub.4 ' and R.sub.5 ' represent hydrogen, chlorine, bromine, benzoylamino, methoxy, ethoxy, methyl or acetylamino,
- R.sub.6 ' represents hydrogen, carbamoyl which is optionally substituted by C.sub.1 -C.sub.4 -alkyl, phenethyl, benzyl or phenyl, sulphamoyl which is optionally substituted by C.sub.1 -C.sub.4 -alkyl, phenethyl, benzyl or phenyl, cyano, nitro or C.sub.1 -C.sub.4 -alkoxy-carbonyl,
- R.sub.8 ' represents hydrogen, acetylamino or benzoylamino and
- R'" represents hydrogen, C.sub.1 -C.sub.4 -alkyl, benzyl, phenethyl or phenyl which is optionally substituted by methyl, chlorine, methoxy, ethoxy, phenoxy (which is optionally substituted by chlorine or methyl), carbamoyl, sulphamoyl, acetylamino, benzoylamino or nitro.
Dependencies are inferred from the claim text.