Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
C07D335/00—Heterocyclic compounds containing six-membered rings having one sulfur atom as the only ring hetero atom
C07D335/04—Heterocyclic compounds containing six-membered rings having one sulfur atom as the only ring hetero atom condensed with carbocyclic rings or ring systems
C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
C09B5/00—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
C09B5/24—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings the heterocyclic rings being only condensed with an anthraquinone nucleus in 1-2 or 2-3 position
C09B5/34—Anthraquinone acridones or thioxanthrones
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Chemical & Material Sciences
(AREA)
Organic Chemistry
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Pyrane Compounds
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Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography
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Description
BERLIN. GEDRUCKT IN DER REICHSDRUCKEREI.BERLIN. PRINTED IN THE REICHSDRUCKEREI.
Claims (1)
Patent-Anspruch:Patent claim:Verfahren zur Darstellung von Nitrothioxanthonen und ihren Derivaten, darin
bestehend, daß man Nitrodiphenylsulfidcarbonsäuren oder ihre Derivate mit anhydridhaltiger
Schwefelsäure behandelt.Process for the preparation of nitrothioxanthones and their derivatives therein
consisting that one Nitrodiphenylsulfidcarbonsäuren or their derivatives with anhydride
Treated with sulfuric acid.