DE610236C - Process for the preparation of ketones of the indole series - Google Patents

Process for the preparation of ketones of the indole series

Info

Publication number
DE610236C
DE610236C DEI47679D DEI0047679D DE610236C DE 610236 C DE610236 C DE 610236C DE I47679 D DEI47679 D DE I47679D DE I0047679 D DEI0047679 D DE I0047679D DE 610236 C DE610236 C DE 610236C
Authority
DE
Germany
Prior art keywords
ketones
preparation
phosgene
methyl
indole series
Prior art date
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.)
Expired
Application number
DEI47679D
Other languages
German (de)
Inventor
Dr Friedrich Heim
Dr Paul Wolff
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DEI47679D priority Critical patent/DE610236C/en
Application granted granted Critical
Publication of DE610236C publication Critical patent/DE610236C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D209/00Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D209/02Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring
    • C07D209/04Indoles; Hydrogenated indoles
    • C07D209/10Indoles; Hydrogenated indoles with substituted hydrocarbon radicals attached to carbon atoms of the hetero ring
    • C07D209/12Radicals substituted by oxygen atoms

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Indole Compounds (AREA)

Description

Verfahren zur Darstellung von Ketonen der Indolreihe Diindölylketone (aus Indol oder Methylketol) sind von O d d o und M i n g o i a (Gazz. chim. Itai. 57, 473) durch Einwirkung von Phosgen auf die Magnesylverbindungen der betreffenden Indole erhalten worden.Process for the preparation of ketones of the indole series Diindölylketone (from indole or methyl ketole) are from O d d o and M i n g o i a (Gazz. chim. Itai. 57, 473) by the action of phosgene on the magnesyl compounds of the relevant Indoles have been obtained.

Es wurde gefunden, daß man in einfacherer Weise Dündolylketone mit ausgezeichneten Ausbeuten erhält, wenn man Phosgen auf Indole, die in a-Stellung durch Aryl, Alkyl oder Aralkyl substituiert sind, in Gegenwart eines geeigneten Lösungsmittels einwirken läßt. Dadurch wird eine technisch einfache Darstellung von Diindolylketonen ermöglicht. Die so hergestellten Betone sollen als Zwischenprodukte für Farbstoffe Verwendung finden.It has been found that you can use Dündolylketone in a simpler way Excellent yields are obtained if phosgene is used on indoles which are in the a-position are substituted by aryl, alkyl or aralkyl, in the presence of a suitable one Lets the solvent act. This makes a technically simple representation made possible by diindolyl ketones. The concretes produced in this way are intended as intermediate products find use for dyes.

Beispiele i. Zu einer Lösung von i Mol Phosgen in Benzol läßt man eine Lösung von 2 Mol Methylketol (2-Methylindol) in Benzol bei gewöhnlicher oder wenig erhöhter Temperatur zutropfen. Das unter Entweichen von Chlorwasserstoff sich ausscheidende gelbrote Reaktionsprodukt wird mit wäßrigem Ammoniak behandelt und etwas unverändertes Methylketol mit Wasserdampf abgetrieben. Das ,; # 3-Di-(2-methylindolyl)-Iketon wird durch Umkristallisieren z. B. aus Nitrobenzol als schwach rötlicher Körper vom F. 289 bis 29o° in einer Ausbeute von etwa 9o % der Theorie erhalten.Examples i. It is added to a solution of 1 mol of phosgene in benzene a solution of 2 moles of methyl ketol (2-methylindole) in benzene at ordinary or Add dropwise at a slightly elevated temperature. That with the escape of hydrogen chloride itself the yellow-red reaction product which separates out is treated with aqueous ammonia and somewhat unchanged methyl ketol driven off with steam. That ,; # 3-Di (2-methylindolyl) ictone is by recrystallization z. B. from nitrobenzene as a slightly reddish body obtained from a temperature of 289 to 29o ° in a yield of about 90% of theory.

z. In eine Lösung von i Mol Phosgen in Benzol werden 2 Mol i-Methyl-2-phenylindol (F. ioi°) eingetragen und bei gewöhnlicher oder wenig erhöhter Temperatur einige Tage gerührt. Aus der braunen Reaktionsmasse wird mit Ammoniak, das Keton ausgeschieden und abgesaugt, durch Einengen der Benzollösung werden weitere Mengen gewonnen. Durch Umkristallisieren aus Toluol erhält man das 3#3-Di-(i-methyl-2-phenylindolyl)-keton rein vom F. 221 bis 222° in einer Ausbeute von etwa 8 5 % der Theorie.z. In a solution of 1 mole of phosgene in benzene, 2 moles of i-methyl-2-phenylindole are added (F. ioi °) and some at ordinary or slightly elevated temperatures Days stirred. The ketone is eliminated from the brown reaction mass with ammonia and sucked off, by concentrating the benzene solution further amounts are obtained. By Recrystallization from toluene gives 3 # 3-di- (i-methyl-2-phenylindolyl) ketone purely from a temperature of 221 to 222 ° in a yield of about 85% of theory.

3. Auf eine Lösung von 2 Mol i-NIethyl-2-phenylindol in Dimethyl-o-toluidin läßt man i Mol Phosgen bei gewöhnlicher Temperatur oder unter Kühlung bis zum Verbrauch des Phosgen$ einwirken. Die Reaktionsmasse wird zur Entfernung des Dimethyl-o-toluidins mit Wasser und Salzsäure und hierauf nach dem Trocknen zur Trennung vom unverbrauchten Indol mit Alkohol ausgekocht. Man erhält auf diese Weise das im Beispiele beschriebene 3 # 3-Di-(i-methyl-2-phenylindolyl)-keton in einer Ausbeute von etwa 9o o,ö der Theorie.3. To a solution of 2 mol of i-methyl-2-phenylindole in dimethyl-o-toluidine one mole of phosgene is left at ordinary temperature or with cooling until consumption of the phosgene. The reaction mass is used to remove the dimethyl-o-toluidine with water and hydrochloric acid and then after drying to separate the unused Indole boiled with alcohol. In this way, what is described in the example is obtained 3 # 3-Di- (i-methyl-2-phenylindolyl) -ketone in a yield of about 90 o, o the Theory.

4. Bei einem gleichen Ansatz, wie in Beispiel e beschrieben; gibt man nach dem Einleiten des Phosgens und Erhitzen auf etwa 4o" etwa i/3 Mol Chlorzink hinzu und rührt bei langsam steigender Temperatur bis zum Verbrauch des Phosgens. Die Aufarbeitung der Schmelze erfolgt in ähnlicher Weise wie in Beispie13 mit verdünnter Salzsäure und Alkohol und ergibt an 3 # 3-Di-(r-metbyl-2-phenylindolyl)-keton eine Ausbeute von 93 % der Theorie.4. With the same approach as described in example e; gives after passing in the phosgene and heating to about 40 ", about 1/3 mol of zinc chloride is added add and stir with slowly increasing temperature until consumption of phosgene. The melt is worked up in a manner similar to that in Example 13 with dilute hydrochloric acid and alcohol and gives 3 # 3-di- (r-metbyl-2-phenylindolyl) -ketone a yield of 93% of theory.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von Ketonen der Indolreihe, dadurch gekennzeichnet, daß man Phosgen auf Indole, die in a-Stellung durch Aryl, Alkyl oder Aralkyl substituiert sind, in Gegenwart eines Lösungsmittels einwirken läßt.PATENT CLAIM: Process for the preparation of ketones of the indole series, characterized in that phosgene on indoles, which in a-position by aryl, Alkyl or aralkyl are substituted, act in the presence of a solvent leaves.
DEI47679D 1933-07-30 1933-07-30 Process for the preparation of ketones of the indole series Expired DE610236C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI47679D DE610236C (en) 1933-07-30 1933-07-30 Process for the preparation of ketones of the indole series

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI47679D DE610236C (en) 1933-07-30 1933-07-30 Process for the preparation of ketones of the indole series

Publications (1)

Publication Number Publication Date
DE610236C true DE610236C (en) 1935-03-06

Family

ID=7192055

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI47679D Expired DE610236C (en) 1933-07-30 1933-07-30 Process for the preparation of ketones of the indole series

Country Status (1)

Country Link
DE (1) DE610236C (en)

Similar Documents

Publication Publication Date Title
DE610236C (en) Process for the preparation of ketones of the indole series
DE470503C (en) Process for the preparation of anthraquinone derivatives
DE488612C (en) Process for the production of bisaminoarylanthrones
DE639509C (en) Process for the production of condensation products from o-diketones
AT33318B (en) Process for the preparation of tri- and tetrahalogen derivatives of indigo.
DE598477C (en) Process for the preparation of substituted aminopyridines
DE582844C (en) Process for the preparation of p-aminodiaryls
DE490187C (en) Process for the preparation of derivatives of benzanthrone
DE562388C (en) Process for the preparation of 4íñ8- and 5íñ8-dihalobenzanthrones
DE522688C (en) Process for the production of Kuepen dyes
DE346188C (en) Process for the preparation of 1-amino-2-anthraquinone aldehyde
DE505321C (en) Process for the production of naphthostyrils monochlorinated in the core
AT147785B (en) Process for the preparation of nitro dyes.
DE631241C (en) Process for the production of Kuepen dyes
DE541267C (en) Process for the production of Kuepen dyes
AT72214B (en) Process for the preparation of sulphurous vat dyes.
CH158545A (en) Process for the preparation of a thioindigoid dye.
DE503717C (en) Process for the preparation of condensation products from ring-hydroxylated aromatic compounds
DE430542C (en) Process for the production of a Kuepen dye of the anthraquinone series
CH149883A (en) Process for producing an aminoaldehyde compound.
CH185343A (en) Process for the preparation of a sulfenamide.
CH137091A (en) Process for the production of an anthraquinone derivative.
CH285011A (en) Process for the production of a quinazoline derivative.
CH134836A (en) Process for the preparation of an arylaminonaphthalene derivative.
CH178956A (en) Process for the production of a new anthraquinone dye.