Benzothioxanthenes

Details Benzothioxanthenes Benzothioxanthenes

1977-02-25

1978-04-04

Jaisle, Cecilia M. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

8179, C07D33504

Patent

active

040827690

ABSTRACT:
Treating compounds of the formula ##STR1## in which the nuclei marked "A" and "B" can be substituted by halogen, lower alkyl, lower alkoxy or phenyl, with acid binding agents at elevated temperatures in polar organic solvents yields compounds of the formula ##STR2## in which A and B have the same meaning. The products are dyestuffs of high brillancy, pure shades, high fluorescence, excellent tinctorial strength and good fastness to light.

REFERENCES:
patent: 3356687 (1967-12-01), Fuchs et al.

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