| abstract |
The compounds of the formula wherein R is an optionally substituted C1-12 alkyl, cycloalkyl, aralkyl or aryl radical, X is a -SO 2 -, -S0 2 NH-or -Group, where R 'is attached to the nitrogen atom, Y is hydrogen or C1-4-alkyl and Z is hydrogen or C1-4-alkyl, can be used as diazo components for the preparation of monoazo dyes. |