CH139372A - Process for the preparation of a nitro-1.2.3.4-tetrahydro-8-acylamino-anthraquinone. - Google Patents
Process for the preparation of a nitro-1.2.3.4-tetrahydro-8-acylamino-anthraquinone.Info
- Publication number
- CH139372A CH139372A CH139372DA CH139372A CH 139372 A CH139372 A CH 139372A CH 139372D A CH139372D A CH 139372DA CH 139372 A CH139372 A CH 139372A
- Authority
- CH
- Switzerland
- Prior art keywords
- tetrahydro
- nitro
- anthraquinone
- preparation
- acylamino
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 4
- 238000002360 preparation method Methods 0.000 title description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 239000013078 crystal Substances 0.000 claims description 2
- 239000000975 dye Substances 0.000 claims description 2
- 230000000802 nitrating effect Effects 0.000 claims description 2
- 239000000825 pharmaceutical preparation Substances 0.000 claims description 2
- 229940127557 pharmaceutical product Drugs 0.000 claims description 2
- 239000011541 reaction mixture Substances 0.000 claims description 2
- 239000007858 starting material Substances 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 2
- 241001024304 Mino Species 0.000 claims 1
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 claims 1
- 150000004056 anthraquinones Chemical class 0.000 claims 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229960000583 acetic acid Drugs 0.000 description 1
- 230000021736 acetylation Effects 0.000 description 1
- 238000006640 acetylation reaction Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000004682 monohydrates Chemical class 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Darstellung eines Nitro-1.2.3.4-tetrahydro-8-aeylnmino-anthraehinons. Gegenstand dieses Zusatzpatentes ist ein Verfahren zur Darstellung eines Nitro- l . 2 . 3 . 4 - tetrahydro - 8 - acetyl - amino- anthra.chinons, dadurch gekennzeichnet, dass man ein 1 . 2 . 3 . 4 - Tetrahydro - 8 - acetyl- aminoanthrachinon mit nitrierenden Mitteln behandelt.
Die neue "Verbindung soll als Ausgangsmaterial für Farbstoffe und phar mazeutische Produkte Verwendung finden. <I>Beispiel:</I> 26,9 Gewichtsteile 1 . 2. 3.4 - Tetra- bydro - 8 - acetyl - aminoanthrachinon (er halten aus dem nach dem Beispiel des Haupt patentes dargestellten 1 . 2. 3.
4 - Tetra, hydro-8-nitroanthraahinon durch Reduktion und Acetylierung) werden bei - 5 in ein Gemenge von 200 Volumteilen Monohydrat und 10 Volumteilen Salpetersäure vom spe zifischen Gewicht 1,4 eingetragen und das Reaktionsgemisch dann auf Eis gegossen.
Der Niederschlag wird abgesaugt, durch Auskochen m@+ Sprit von rotgefärbten Neben- Produkten befreit und aus Eisessig umkri stallisiert. Man erhält so. orange gefärbte Kristalle, welche sich bei 185 zersetzen und in konzentrierter Schwefelsäure fast farblos löslich sind.
Process for the preparation of a nitro-1.2.3.4-tetrahydro-8-aeylnmino-anthraehinone. The subject of this additional patent is a method for the representation of a nitro-l. 2. 3. 4 - tetrahydro - 8 - acetyl - amino anthraquinones, characterized in that a 1. 2. 3. 4 - Tetrahydro - 8 - acetylaminoanthraquinone treated with nitrating agents.
The new "compound should be used as a starting material for dyes and pharmaceutical products. <I> Example: </I> 26.9 parts by weight 1. 2. 3.4 - tetrahydro - 8 - acetyl - aminoanthraquinone (obtained from the after the example of the main patent 1. 2. 3.
4 - tetra, hydro-8-nitroanthraahinone by reduction and acetylation) are added at -5 to a mixture of 200 parts by volume of monohydrate and 10 parts by volume of nitric acid with a specific weight of 1.4 and the reaction mixture is then poured onto ice.
The precipitate is suctioned off, freed from red-colored by-products by boiling m @ + fuel and recrystallized from glacial acetic acid. You get so. orange colored crystals which decompose at 185 and are almost colorlessly soluble in concentrated sulfuric acid.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE139372X | 1927-08-18 | ||
| CH137738T | 1928-08-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH139372A true CH139372A (en) | 1930-04-15 |
Family
ID=25713038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH139372D CH139372A (en) | 1927-08-18 | 1928-08-09 | Process for the preparation of a nitro-1.2.3.4-tetrahydro-8-acylamino-anthraquinone. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH139372A (en) |
-
1928
- 1928-08-09 CH CH139372D patent/CH139372A/en unknown
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