CH175242A - Process for the preparation of an azo compound. - Google Patents
Process for the preparation of an azo compound.Info
- Publication number
- CH175242A CH175242A CH175242DA CH175242A CH 175242 A CH175242 A CH 175242A CH 175242D A CH175242D A CH 175242DA CH 175242 A CH175242 A CH 175242A
- Authority
- CH
- Switzerland
- Prior art keywords
- azo compound
- preparation
- soluble
- deep blue
- color
- Prior art date
Links
- -1 azo compound Chemical class 0.000 title claims description 5
- 238000000034 method Methods 0.000 title claims description 4
- 238000002360 preparation method Methods 0.000 title claims description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- NUIURNJTPRWVAP-UHFFFAOYSA-N 3,3'-Dimethylbenzidine Chemical compound C1=C(N)C(C)=CC(C=2C=C(C)C(N)=CC=2)=C1 NUIURNJTPRWVAP-UHFFFAOYSA-N 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000004043 dyeing Methods 0.000 claims description 2
- 230000007935 neutral effect Effects 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 2
- 230000001225 therapeutic effect Effects 0.000 claims description 2
- KJCVRFUGPWSIIH-UHFFFAOYSA-N 1-naphthol Chemical compound C1=CC=C2C(O)=CC=CC2=C1 KJCVRFUGPWSIIH-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
Landscapes
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Description
Verfahren zur Darstellung einer Azoverbinduug. Das torliegende Verfahren betrifft die Darstellung einer Azoverbindung und ist dadurch gekennzeichnet, dass man 1,8,3,6- Cholalylaminonaphtoldisulfosäure mit tetra- zotiertem o-Tolidin kuppelt.
<I>Beispiel:</I> Zu einer mit Hilfe von 2.0 gr Soda her gestellten Lösung von 36,6 gr Cholalylamino- naphtoldisulfosäure <B>(</B>1,8,3;6) in 250 cm' Wasser gibt man die aus 10,6 gr o-Tolidin gewonnene Tetrazolösung bei<B>10</B> , lässt einige Zeit bei dieser Temperatur stehen und er wärmt auf 30 . Nach dem Stehen über Nacht wird der Farbstoff mit 3 Liter Alkohol ge fällt und der noch halbflüssige Farbstoff mit wenig Wasser aufgenommen, diese Lösung dialysiert und der so von Salzen gereinigte Farbstoff mit 500 cm' absolutem Alkohol und 500 cm' Äther ausgefällt.
Man erhält nach dem Trocknen im Vakuum ein dunkelviolet tes Pulver, löslich in Wasser mit tiefblauer Farbe und neutraler Reaktion, löslich in Alkohol mit violetter Farbe, unlöslich in Äther, Benzol, Essigester. Die Lösung in konzentrierter Schwefelsäure ist rein tief blau gefärbt.
Die neue Verbindung soll weniger zu färberischen als zu therapeutischen Zwecken verwendet werden.
Process for the preparation of an azo compound. The process behind the scenes concerns the preparation of an azo compound and is characterized in that 1,8,3,6-cholalylaminonaphthol disulfonic acid is coupled with tetrazotized o-tolidine.
<I> Example: </I> To a solution of 36.6 g of cholalylamino naphthol disulfonic acid in 250 cm 'of water, made with the help of 2.0 g of soda, add <B> (</B> 1,8,3; 6) the tetrazo solution obtained from 10.6 gr o-tolidine is <B> 10 </B>, left to stand for some time at this temperature and it is warmed to 30. After standing overnight, the dye is precipitated with 3 liters of alcohol and the still semi-liquid dye is taken up with a little water, this solution is dialyzed and the dye, purified of salts, is precipitated with 500 cm 'absolute alcohol and 500 cm' ether.
After drying in vacuo, a dark violet powder is obtained, soluble in water with a deep blue color and neutral reaction, soluble in alcohol with a violet color, insoluble in ether, benzene, ethyl acetate. The solution in concentrated sulfuric acid is pure deep blue in color.
The new compound should be used less for dyeing than for therapeutic purposes.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE175242X | 1932-04-09 | ||
| CH172364T | 1933-04-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH175242A true CH175242A (en) | 1935-02-15 |
Family
ID=25719184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH175242D CH175242A (en) | 1932-04-09 | 1933-04-02 | Process for the preparation of an azo compound. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH175242A (en) |
-
1933
- 1933-04-02 CH CH175242D patent/CH175242A/en unknown
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