DE566782C - Process for the production of perhydrogenated diphenylene oxide - Google Patents

Process for the production of perhydrogenated diphenylene oxide

Info

Publication number
DE566782C
DE566782C DE1930566782D DE566782DD DE566782C DE 566782 C DE566782 C DE 566782C DE 1930566782 D DE1930566782 D DE 1930566782D DE 566782D D DE566782D D DE 566782DD DE 566782 C DE566782 C DE 566782C
Authority
DE
Germany
Prior art keywords
oxide
perhydrogenated
diphenylene oxide
production
diphenylene
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
DE1930566782D
Other languages
German (de)
Inventor
Dr Konrad Stenger
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
Application granted granted Critical
Publication of DE566782C publication Critical patent/DE566782C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D307/00Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/77Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D307/91Dibenzofurans; Hydrogenated dibenzofurans

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Verfahren zur Herstellung von perhydriertem Diphenylenoxyd Von hydrierten Derivaten des Diphenylenoxyds sind bisher nur das Tetrahydrodipheny lenoxyd, erhalten durch Behandeln von Diplienylenoxyd mit Natrium und Alkohol, un:dHexahydrodiphenylenoxyd,erhalten durch Hydrierung von o#o,'-Dioxydiphenyl, bekannt geworden.Process for the preparation of perhydrogenated diphenylene oxide From hydrogenated Derivatives of diphenylene oxide are so far only the Tetrahydrodipheny lenoxyd obtained by treating diplienylene oxide with sodium and alcohol, and d hexahydrodiphenylene oxide by hydrogenation of o # o, '- dioxydiphenyl, became known.

Es wurde nun gefunden, daß man zu einem neuen Perhydrodiphenylenoxyd gelangen kann, wenn man Diphenylenoxyd, am besten ohne Anwendung von Lösungsmitteln, der katalytischen Hydrierung bei Temperaturen von nicht wesentlich höher als 2oo° unterwirft. Zweckmäßig verwendet man einen Hochwirksamen Nickelkatalysator, um die Hydrierung bei möglichst niedriger Temperatur durchzuführen. Man hat zwar schon Diplienylenoxyd in Gegenwart von Hydrierungskatalysatoren unter Druck bei erhöhter Temperatur mit Wasserstoff behandelt, aber unter Anwendung von Cyclohexan als Lösungsmittel und bei so hoher Temperatur und so hohem Druck (29o° und. 14o Atm.), daß die Sauerstoffbrücke des Diphenylenoxyds nicht erhalten bleibt.It has now been found that a new perhydrodiphenylene oxide can be obtained can be achieved if diphenylene oxide is used, preferably without the use of solvents, catalytic hydrogenation at temperatures not significantly higher than 2oo ° subject. It is advisable to use a highly effective nickel catalyst to the Carry out hydrogenation at the lowest possible temperature. One already has Diplienylene oxide in the presence of hydrogenation catalysts under pressure at increased Treated temperature with hydrogen, but using cyclohexane as a solvent and at such a high temperature and pressure (29o ° and 14o atm.) that the oxygen bridge of the diphenylene oxide is not retained.

Das Perhydrodiphenylenoxyd stellt eine farblose Flüssigkeit von angenehm terpenartigem Geruch dar und soll als Ausgangsmaterial für Riechstoffe und pharmazeutische Produkte verwendet werden.The perhydrodiphenylene oxide represents a colorless liquid of pleasant terpene-like odor and is intended as a raw material for fragrances and pharmaceuticals Products are used.

Beispiel ioo g Diphenylenoxyd werden in Gegenwart eines Nickelkatalysators entsprechend 49 Nickel (erhältlich durch Fällen einer Nickelsalzlösung mit Alkali in Gegenwart eines Trägers, Trocknen und Behandeln des Niederschlags mit Wasserstoff bei Temperaturen bis zu etwa 6oo°) mit Wasserstoff im Rührautoklaven bei einem Druck von 20 bis 5o Atm. unter Erhitzen behandelt. Die Wasserstoffaufnahme beginnt bei 9o bis ioo° und verläuft glatt bei 12,5 bis i4o°. Nach Beendigung der Wasserstoffaufnahme läßt man erkalten, saugt die -flüssige Reaktionsmasse vom Katalysator ab und unterwirft sie der Vakuumdestillation. Man erhält in guter Ausbeute eine bei 9 mm und i i x bis 114° übergehende wasserklare Flüssigkeit, welche der Analyse und der aufgenommenen Wasserstoffmenge nach das Perhydrodiphenylenoxyd darstellt. Die Analyse des durch einmalige Destillation gereinigten Produktes ergab die Werte für C,H"0 her. C.8o,o°J0 H ii,i1 °;o gef. C. 80,3 °/o H 11,30 °/o.Example 100 g of diphenylene oxide are in the presence of a nickel catalyst corresponding to 49 nickel (obtainable by precipitating a nickel salt solution with alkali in the presence of a carrier, drying and treating the precipitate with hydrogen at temperatures up to about 600 °) with hydrogen in a stirred autoclave at a pressure of 20 to 5o atm. treated with heating. The hydrogen uptake begins at 9o to 100 ° and runs smoothly at 12.5 to 14o °. After the uptake of hydrogen has ended, the mixture is allowed to cool, the liquid reaction mass is filtered off with suction from the catalyst and subjected to vacuum distillation. A water-clear liquid is obtained in good yield at 9 mm and iix to 114 °, which, according to analysis and the amount of hydrogen absorbed, represents perhydrodiphenylene oxide. Analysis of the purified by single distillation product gave the values for C, H "0 C.8o forth, o ° J0 H ii, i1 °;. O Found C. 80.3 ° / o H 1 1.30 ° /. O.

Claims (1)

PATENTANSP1LÜC1'I: Verfahren zur Herstellung von perhydriertem Diphenylenoxyd, dadurch gekennzeichnet, daß man Diphenylenoxyd in Gegenwart von Nickelkatalysatoren unter Druck beiTemperaturen von nicht wesentlich höher als 2oo° mit Wasserstoff behandelt.PATENTANSP1LÜC1'I: Process for the production of perhydrogenated diphenylene oxide, characterized in that diphenylene oxide is used in the presence of nickel catalysts under pressure at temperatures not significantly higher than 200 ° with hydrogen treated.
DE1930566782D 1930-11-13 1930-11-13 Process for the production of perhydrogenated diphenylene oxide Expired DE566782C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE566782T 1930-11-13

Publications (1)

Publication Number Publication Date
DE566782C true DE566782C (en) 1932-12-21

Family

ID=6567653

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1930566782D Expired DE566782C (en) 1930-11-13 1930-11-13 Process for the production of perhydrogenated diphenylene oxide

Country Status (1)

Country Link
DE (1) DE566782C (en)

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