Sulphur dyestuffs of the carbazole series

Details Sulphur dyestuffs of the carbazole series Sulphur dyestuffs of the carbazole series

1981-04-06

1982-11-23

Ramsuer, Robert W.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

348440, C07D 4912

Patent

active

043604595

ABSTRACT:
Carbazoleazomethines are prepared and sulfur dyestuffs are prepared by sulphurizing a carbazoleazomethine of the formula ##STR1## wherein R.sup.1 is hydrogen, hydroxyl, halogen, nitro, alkyl having 1 to 8 carbon atoms, alkoxy having 1 to 8 carbon atoms, dialkylamino having 1 to 4 carbon atoms per alkyl, alkanoyloxy having 1 to 8 carbon atoms, benzoyloxy, alkanoylamino having 1 to 8 carbon atoms or benzoylamino;

REFERENCES:
patent: 2212821 (1940-08-01), Bigelow et al.
"Die Carbazolgruppe"-Dr. Georg Cohn-p. 98 (1919).

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