CH127928A - Process for the production of a new anthraquinone derivative. - Google Patents
Process for the production of a new anthraquinone derivative.Info
- Publication number
- CH127928A CH127928A CH127928DA CH127928A CH 127928 A CH127928 A CH 127928A CH 127928D A CH127928D A CH 127928DA CH 127928 A CH127928 A CH 127928A
- Authority
- CH
- Switzerland
- Prior art keywords
- production
- anthraquinone derivative
- new anthraquinone
- new
- red
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- 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
- C09B1/00—Dyes with anthracene nucleus not condensed with any other ring
- C09B1/02—Hydroxy-anthraquinones; Ethers or esters thereof
- C09B1/06—Preparation from starting materials already containing the anthracene nucleus
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C233/00—Carboxylic acid amides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
<B>Zusatzpatent</B> zum Hauptpatent Nr. 12.4526. Verfahren zur Herstellung eines neuen Anthrachinonderivates. Es wurde gefunden, dass man ein neues Anthrachinonderivat erhält, wenn man Dime- thylolharnstoff mit 2-Oxyanthrachinon kon densiert.
Die so erhaltene Verbindung stellt sehr wahrscheinlich den sym-(2,2'-Dioxydianthra- chinonyl)-dimethylharnstoff dar und bildet grünlichgelbe Kristalle, welche bei 250 unter Zersetzung schmelzen. In konzentrierter Schwefelsäure löst er sich rot, in kaustischen Alkalien ebenfalls rot. Das neue Produkt wird zur Herstellung von Farbstoffen und weiteren Zwischenprodukten verwendet.
Beispiel: Einer Lösung von 5 Teilen 2-Oxyanthra- chinon in 50 Teilen konzentrierter Schwefel säure gibt man allmählich unter Rühren 3 Teile Dimethylolharnstoff zu und lässt 2 Tage rühren. Der durch Giessen dieser Lösung auf Eis erhaltene Niederschlag wird mit Alkohol ausgekocht und der verbleibende Rückstand aus Pyridin umkristallisiert.
<B> Additional patent </B> to main patent No. 12.4526. Process for the production of a new anthraquinone derivative. It has been found that a new anthraquinone derivative is obtained if dimethylolurea is condensed with 2-oxyanthraquinone.
The compound obtained in this way very probably represents sym- (2,2'-dioxydianthraquinonyl) -dimethylurea and forms greenish-yellow crystals which melt at 250 ° C with decomposition. It dissolves red in concentrated sulfuric acid, and red in caustic alkalis. The new product is used to manufacture dyes and other intermediate products.
Example: A solution of 5 parts of 2-oxyanthraquinone in 50 parts of concentrated sulfuric acid is gradually added to 3 parts of dimethylolurea with stirring and allowed to stir for 2 days. The precipitate obtained by pouring this solution onto ice is boiled with alcohol and the remaining residue is recrystallized from pyridine.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH127928T | 1926-09-23 | ||
CH124526T | 1926-09-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH127928A true CH127928A (en) | 1928-09-17 |
Family
ID=25710266
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH127928D CH127928A (en) | 1926-09-23 | 1926-09-23 | Process for the production of a new anthraquinone derivative. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH127928A (en) |
-
1926
- 1926-09-23 CH CH127928D patent/CH127928A/en unknown
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