DE595135C - Process for the preparation of N-alkyl perhydrocarbazoles - Google Patents

Process for the preparation of N-alkyl perhydrocarbazoles

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Publication number
DE595135C
DE595135C DEI43372D DEI0043372D DE595135C DE 595135 C DE595135 C DE 595135C DE I43372 D DEI43372 D DE I43372D DE I0043372 D DEI0043372 D DE I0043372D DE 595135 C DE595135 C DE 595135C
Authority
DE
Germany
Prior art keywords
weight
parts
alkyl
preparation
carbazole
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
DEI43372D
Other languages
German (de)
Inventor
Dr Max Bockmuehl
Dr Walter Krohs
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 DEI43372D priority Critical patent/DE595135C/en
Application granted granted Critical
Publication of DE595135C publication Critical patent/DE595135C/en
Expired legal-status Critical Current

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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
    • C07D209/56Ring systems containing three or more rings
    • C07D209/80[b, c]- or [b, d]-condensed
    • C07D209/82Carbazoles; Hydrogenated carbazoles
    • C07D209/86Carbazoles; Hydrogenated carbazoles with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to carbon atoms of the ring system

Description

Verfahren zur Herstellung von N-Alkylperhydrocarbazolen In der Patentschrift 514822 ist ein Verfahren zur Herstellung von perhydrierten Cärbazolen beschrieben, nach welchem u. a. N-Alkylderivate des Carbazols unter Druck und bei erhöhter Temperatur in Gegenwart eines Katalysators, der Nickel allein oder im Gemisch mit anderen Metallen, zweckmäßig solchen der Eisengruppe, enthält und durch Reduktion der bei erhöhter Temperatur ,auf einen Träger niedergeschlagenen Metallverbindungen bei Temperaturen über q.oo° hergestellt ist, mit Wasserstoff behandelt werden.Process for the preparation of N-alkyl perhydrocarbazoles In the patent 514822 describes a process for the preparation of perhydrogenated carbazoles, according to which i.a. N-alkyl derivatives of carbazole under pressure and at elevated temperature in the presence of a catalyst containing nickel alone or in a mixture with other metals, expediently those of the iron group, contains and by reducing the at increased Temperature, metal compounds deposited on a support at temperatures is produced over q.oo °, be treated with hydrogen.

Es wurde nun gefunden, daß man zu den in dem Hauptpatent beschriebenen N-Alkylperhydrocarbazolen und deren Derivaten auch vorteilhaft dadurch gelangen kann, daß man Carbazol und seine am Stickstoff nicht substituierten Derivate in Gegenwart eines Alkohols dem Verfahren des Hauptpatentes unterwirft. Auf diese Weise erhält man, vom. Carbazol und seinen am Stickstoff nicht substituierteit Abkömmlingen ausgehend, die N-Alkylperhydrocarbazole in einem einzigen Arbeitsgang. Als Katalysatoren können neben den im Hauptpatent beschriebenen auch solche Metallkatalysatoren Verwendung finden, welche durch Metalloxyde, wie beispielsweise die Oxyde des Chroms, Wolframs, Vanadins, Titans u. a., ,aktiviert sind. Beispiel i i. ioo Gewichtsteile Carbazol, Zoo Gewichtsteile Butanol und i o Gewichtsteile des in der Patentschrift 514822, Beispiel i, beschriebenen Nickelkatalysators werden bei 5o bis ioo Atm. Wasserstoffdruck bei einer Anfangstemperatur von 170° und einer Endtemperatur von 22o° hydriert. Nach dem Erkalten trennt man vom Katalysator und reinigt durch Vakuumdestillation. Bei 3 mm Druck ,siedet das N-B,utylperhydrocarbazol bei 125 bis 130°. Ausbeute fast quantitativ. Beispiel 2 ioo Gewichtsteile Carbazol, Zoo Gewichtsteile Isoamylalköhol und i o Gewichtsteile des nach der Patentschrift 514822, Beispiel 3, hergestellten Nickelkatalysators werden, wie in Beispiel i, hydriert und aufgearbeitet. Das N-Isoamylperhydrocarbazol siedet bei ¢ mm Druck bei 155 bis 165°. Ausbeute fast quantitativ.It has now been found that one of those described in the main patent N-Alkylperhydrocarbazolen and their derivatives also get advantageous thereby can that one carbazole and its derivatives unsubstituted on the nitrogen in Subject to the process of the main patent in the presence of an alcohol. In this way is obtained from. Carbazole and its derivatives not substituted on nitrogen starting out, the N-Alkylperhydrocarbazole in a single operation. As catalysts In addition to those described in the main patent, such metal catalysts can also be used find, which by metal oxides, such as the oxides of chromium, tungsten, Vanadins, Titans and others, are activated. Example i i. 100 parts by weight of carbazole, Zoo parts by weight of butanol and 10 parts by weight of that in patent 514822, Example i, described nickel catalyst are at 50 to 100 atm. Hydrogen pressure hydrogenated at an initial temperature of 170 ° and a final temperature of 220 °. After cooling, the catalyst is separated off and purified by vacuum distillation. At 3 mm pressure, the N-B, utylperhydrocarbazole boils at 125 to 130 °. Yield almost quantitatively. Example 2 100 parts by weight carbazole, Zoo parts by weight isoamyl alcohol and 10 parts by weight of that according to patent specification 514822, Example 3, prepared Nickel catalyst are, as in Example i, hydrogenated and worked up. That N-isoamyl perhydrocarbazole boils at 155 to 165 ° at ¢ mm pressure. Almost quantitative yield.

Beispiel 3 ioo Gewichtsteile Carbazol, 25o Gewichtsteile üctylalkohol und i o Gewichtsteile eines in der Patentschrift 5148z2 beschriebenen Nickelkatalysators, der außerdem mit Wolframsäure aktiviert worden ist, werden, wie in Beispiel i, hydriert. Das N-Octylperhydrocarbazol siedet bei 4 mm Druck bei 185 bis 195,- Beispiel 4 ioo Gewichtsteile Carbazol, 3oo Gewichtsteile Dodecylalköhol und io Gewichtsteile eines nach der Patentschrift 514822 hergestellten, mit Vanadinpentoxyd und Chromsäure aktivierten Nickelkatalysators werden, wie in Beispiel i, hydriert. Das N-Dodecylperhydrocarbazol siedet bei 4mm Druck bei 226 bis 235°. Ausbeute nahezu quantitativ. Beispiel s 2o Gewichtsteile 2-Methylcarbazol werden in Gegenwart von i oo Gewichtsteilen Butanol und 2 Gewichtsteilen eines Nickelkatalysators,, wie in Beispiel i beschrieben, der Hydrierung unterworfen. Man erhält nach Reinigung durch Vakuumdestillation das N-Butyl-2-methylperhydrocarbazol vom Siedepunkt 144 bis 146° bei 4mm Druck.EXAMPLE 3 100 parts by weight of carbazole, 250 parts by weight of octyl alcohol and 10 parts by weight of a nickel catalyst described in patent 5148z2, which has also been activated with tungstic acid, are hydrogenated as in Example i. The N-octylperhydrocarbazole boils under 4 mm pressure at 185 to 195, - Example 4 100 parts by weight of carbazole, 300 parts by weight of dodecyl alcohol and 10 parts by weight of a nickel catalyst activated with vanadium pentoxide and chromic acid activated with vanadium pentoxide and chromic acid are hydrogenated as in Example i. The N-dodecyl perhydrocarbazole boils at a pressure of 4 mm at 226 to 235 °. Almost quantitative yield. Example s 2o parts by weight of 2-methylcarbazole are subjected to the hydrogenation in the presence of 100 parts by weight of butanol and 2 parts by weight of a nickel catalyst, as described in Example 1. After purification by vacuum distillation, N-butyl-2-methylperhydrocarbazole is obtained with a boiling point of 144 ° to 146 ° at 4 mm pressure.

Claims (2)

PATENTANSPRÜCHE: i. Abänderung des Verfahrens zur Herstellung von N-Alkylperhydrocarbazolen nach Patent 514822, dadurch gekennzeichnet, daß man die Hydrierung des Carbazols und seiner am Stickstoff nicht substituierten Derivate in Gegenwart eines Alkohols ausführt. PATENT CLAIMS: i. Modification of the manufacturing process for N-alkylperhydrocarbazoles according to Patent 514822, characterized in that the Hydrogenation of carbazole and its derivatives unsubstituted on the nitrogen performs in the presence of an alcohol. 2. Verfahren nach Anspruch i, gekennzeichnet durch die Verwendung von solchen Metallkatalysatoren, welche durch Metalloxyde, wie Oxyde des Chroms, Wolframs, Vanadins, Titans u. a., aktiviert wird.2. The method according to claim i, characterized through the use of such metal catalysts, which by metal oxides, such as oxides of chromium, tungsten, vanadium, titanium and others, is activated.
DEI43372D 1931-12-25 1931-12-25 Process for the preparation of N-alkyl perhydrocarbazoles Expired DE595135C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI43372D DE595135C (en) 1931-12-25 1931-12-25 Process for the preparation of N-alkyl perhydrocarbazoles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI43372D DE595135C (en) 1931-12-25 1931-12-25 Process for the preparation of N-alkyl perhydrocarbazoles

Publications (1)

Publication Number Publication Date
DE595135C true DE595135C (en) 1934-03-29

Family

ID=7191016

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI43372D Expired DE595135C (en) 1931-12-25 1931-12-25 Process for the preparation of N-alkyl perhydrocarbazoles

Country Status (1)

Country Link
DE (1) DE595135C (en)

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