AT56760B - Process for the preparation of indophenols. - Google Patents
Process for the preparation of indophenols.Info
- Publication number
- AT56760B AT56760B AT56760DA AT56760B AT 56760 B AT56760 B AT 56760B AT 56760D A AT56760D A AT 56760DA AT 56760 B AT56760 B AT 56760B
- Authority
- AT
- Austria
- Prior art keywords
- indophenols
- derivatives
- parts
- preparation
- solution
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 5
- 238000002360 preparation method Methods 0.000 title claims description 3
- AAQTWLBJPNLKHT-UHFFFAOYSA-N 1H-perimidine Chemical compound N1C=NC2=CC=CC3=CC=CC1=C32 AAQTWLBJPNLKHT-UHFFFAOYSA-N 0.000 claims description 4
- ITUYMTWJWYTELW-UHFFFAOYSA-N 4-chloroiminocyclohexa-2,5-dien-1-one Chemical compound ClN=C1C=CC(=O)C=C1 ITUYMTWJWYTELW-UHFFFAOYSA-N 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- PLIKAWJENQZMHA-UHFFFAOYSA-N 4-aminophenol Chemical compound NC1=CC=C(O)C=C1 PLIKAWJENQZMHA-UHFFFAOYSA-N 0.000 claims 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- RSAZYXZUJROYKR-UHFFFAOYSA-N indophenol Chemical compound C1=CC(O)=CC=C1N=C1C=CC(=O)C=C1 RSAZYXZUJROYKR-UHFFFAOYSA-N 0.000 description 3
- ZYECOAILUNWEAL-NUDFZHEQSA-N (4z)-4-[[2-methoxy-5-(phenylcarbamoyl)phenyl]hydrazinylidene]-n-(3-nitrophenyl)-3-oxonaphthalene-2-carboxamide Chemical compound COC1=CC=C(C(=O)NC=2C=CC=CC=2)C=C1N\N=C(C1=CC=CC=C1C=1)/C(=O)C=1C(=O)NC1=CC=CC([N+]([O-])=O)=C1 ZYECOAILUNWEAL-NUDFZHEQSA-N 0.000 description 2
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 description 2
- CDAWCLOXVUBKRW-UHFFFAOYSA-N 2-aminophenol Chemical class NC1=CC=CC=C1O CDAWCLOXVUBKRW-UHFFFAOYSA-N 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- HJXMORWPPSSVMF-UHFFFAOYSA-N 2-methyl-1h-perimidine Chemical compound C1=CC(NC(C)=N2)=C3C2=CC=CC3=C1 HJXMORWPPSSVMF-UHFFFAOYSA-N 0.000 description 1
- JHWIEAWILPSRMU-UHFFFAOYSA-N 2-methyl-3-pyrimidin-4-ylpropanoic acid Chemical compound OC(=O)C(C)CC1=CC=NC=N1 JHWIEAWILPSRMU-UHFFFAOYSA-N 0.000 description 1
- KXLJLJJNISGKPN-UHFFFAOYSA-N 2-phenyl-1h-perimidine Chemical compound C1=CC=CC=C1C(N1)=NC2=CC=CC3=CC=CC1=C23 KXLJLJJNISGKPN-UHFFFAOYSA-N 0.000 description 1
- 229910000906 Bronze Inorganic materials 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
Landscapes
- Coloring (AREA)
- Indole Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Darstellung von Indophenolen.
Es wurde gefunden, dass sich das sogenannte Perimidin und seine Derivate (vergl.
Annalen 365, S. 83 und ff.) mit Leichtigkeit in Indophenole überführen lassen, wenn man diese Körper entweder mit Aminophenole oder deren Derivaten zusammenoxydiert oder wenn man dieselben mit Chinonchlorimid oder dessen Derivaten kondensiert. Die so erhaltenen neuen Indophenole zeigen die bekannten Eigenschaften dieser Körperklasse und lassen sich beispielsweise zu Leukoverbindungen reduzieren, die durch die Einwirkung oxydierender Mittel wiederum in die Indophenole übergehen. Zur Erläuterung des Ver fahrens dienen folgende Beiapiele : Beispiel l : 18-2 Teile des 2-Methylperimidins (vergl. Annalen 365, S. 89) werden unter Zusatz von 100 Teilen zirka 250 ! oiger Essigsäure in etwa 500 Teilen Wasser gelöst.
Zu dieser Lösung gibt man eine wässrige Lösung von 21'5 Teilen 2. 6-Dichlor- - p-aminophenolchlorhydrat und lässt unter gutem Rühren bei einer Temperatur von zirka 400 30'5 Teile Natriumbichromatlösung (440/0 Cr Oa) zuflieen, Das gebildete Indophenol scheidet sich in feinem, kristallinischem Zustande mit rotvioletter Farbe aus und bildet nach dem Trocknen ein dunkles Pulver mit Bronzeglanz, das sich in Natronlauge mit rein blauer Farbe löst.
Beispiel 2 : 20-5 Teile Perimidinchlorhydrat (vergl. Annalen 365, S. 83) werden in zirka 500 Teilen Wasser gelöst und die mit Eis gekühlte Lösung unter gutem Rühren mit 40 Teilen Natronlauge von 400 Bé versetzt. Alsdann fügt man 14-2 Teile Chinon- chlorimid hinzu, worauf sich eine tiefblaue Lösung bildet, aus der bei Zusatz von Säure das gebildete Indophenol mit rotvioletter Farbe ausgeschieden wird.
An Stelle des in den vorstehenden Beispielen verwendeten Perimidins bzw. seines Derivates kann man andere Derivate desselben verwenden, wie beispielsweise das 2-Phenylperimidin (vergl. Annalen 365, S. 94) ; letzteres gibt ein Indophenol, dessen Natriumsalz verhältnismässig schwer löslich ist.
In dem Verfahren der vorliegenden Erfindung können an Stelle des Chinonchlorimids dessen Derivate, wie beispielsweise Dichlorchinonimid, treten ; ferner kann man beim Zusammenoxydieren des Perimidina usw. und des betreffenden Aminophenols andere geeignete Oxydationsmittel zur Anwendung bringen.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for the preparation of indophenols.
It was found that the so-called perimidine and its derivatives (cf.
Annalen 365, p. 83 and ff.) Can be easily converted into indophenols if these bodies are either oxidized together with aminophenols or their derivatives or if they are condensed with quinone chlorimide or its derivatives. The new indophenols obtained in this way show the known properties of this body class and can be reduced, for example, to leuco compounds, which in turn convert into the indophenols through the action of oxidizing agents. The following examples serve to explain the process: Example 1: 18-2 parts of 2-methylperimidine (cf. Annalen 365, p. 89) are approx. 250 with the addition of 100 parts! oiger acetic acid dissolved in about 500 parts of water.
An aqueous solution of 21'5 parts of 2. 6-dichloro - p-aminophenol chlorohydrate is added to this solution and 30'5 parts of sodium dichromate solution (440/0 Cr Oa) are allowed to flow in with thorough stirring at a temperature of about 400 Indophenol separates in a fine, crystalline state with a red-violet color and, after drying, forms a dark powder with a bronze sheen, which dissolves in sodium hydroxide solution with a purely blue color.
Example 2: 20-5 parts of perimidine chlorohydrate (cf. Annalen 365, p. 83) are dissolved in about 500 parts of water and 40 parts of sodium hydroxide solution of 400 Be are added to the solution, which has been cooled with ice, with thorough stirring. 14-2 parts of quinone chloride are then added, whereupon a deep blue solution is formed, from which, when acid is added, the indophenol formed is precipitated with a red-violet color.
Instead of the perimidine or its derivative used in the above examples, other derivatives thereof can be used, such as, for example, 2-phenylperimidine (see Annalen 365, p. 94); the latter gives an indophenol, the sodium salt of which is relatively sparingly soluble.
In the process of the present invention, the quinone chlorimide may be substituted with its derivatives such as dichloroquinonimide; furthermore, when the perimidina, etc., and the aminophenol in question are oxidized together, other suitable oxidizing agents can be employed.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE56760X | 1911-03-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT56760B true AT56760B (en) | 1912-12-10 |
Family
ID=5628897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT56760D AT56760B (en) | 1911-03-18 | 1912-02-26 | Process for the preparation of indophenols. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT56760B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11208017B2 (en) | 2018-02-16 | 2021-12-28 | Bayerische Motoren Werke Aktiengesellschaft | Motor vehicle seat, motor vehicle equipped therewith and method for adjusting a cover tension of the motor vehicle seat |
-
1912
- 1912-02-26 AT AT56760D patent/AT56760B/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11208017B2 (en) | 2018-02-16 | 2021-12-28 | Bayerische Motoren Werke Aktiengesellschaft | Motor vehicle seat, motor vehicle equipped therewith and method for adjusting a cover tension of the motor vehicle seat |
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