Novel dyestuff intermediates and use thereof for the manufacture

Details Novel dyestuff intermediates and use thereof for the manufacture Novel dyestuff intermediates and use thereof for the manufacture

1986-01-17

1987-07-07

Siegel, A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

8666, 8681, 8683, C07C14356, C09B 2900

Patent

active

046786112

ABSTRACT:
Dyestuff intermediates of the formula ##STR1## wherein R.sub.1 represents hydrogen, an alkyl radical of 1 to 8 carbon atoms or a phenyl radical, R.sub.2 represents hydrogen or an acyl radical and Z represents hydrogen or a sulfo group, and the use thereof for the manufacture of azo dyes of the formula ##STR2## wherein D represents the radical of a coupling component, R.sub.1 represents hydrogen, an alkyl radical of 1 to 8 carbon atoms or a phenyl radical, and R.sub.2 represents hydrogen or an acyl radical, or of azo dyes of the formula ##STR3## wherein K is the radical of a coupling component, Z represents hydrogen or the sulfo group, and R.sub.2 represents hydrogen or an acyl radical.

REFERENCES:
patent: 4126609 (1978-11-01), Jager

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