DE389815C - Process for the preparation of 1-alkylcyclohexan-3-ones - Google Patents

Process for the preparation of 1-alkylcyclohexan-3-ones

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Publication number
DE389815C
DE389815C DEF50399D DEF0050399D DE389815C DE 389815 C DE389815 C DE 389815C DE F50399 D DEF50399 D DE F50399D DE F0050399 D DEF0050399 D DE F0050399D DE 389815 C DE389815 C DE 389815C
Authority
DE
Germany
Prior art keywords
ones
preparation
alkylcyclohexan
weight
parts
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
DEF50399D
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German (de)
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.)
FRITZ SIEFERT DR
Original Assignee
FRITZ SIEFERT DR
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 FRITZ SIEFERT DR filed Critical FRITZ SIEFERT DR
Priority to DEF50399D priority Critical patent/DE389815C/en
Application granted granted Critical
Publication of DE389815C publication Critical patent/DE389815C/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
    • C07C45/65—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by splitting-off hydrogen atoms or functional groups; by hydrogenolysis of functional groups

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

Description

Verfahren zur Darstellung von 1-Alkyleyklohexan-3-onen. Es wurde gefunden, daß man durch Reduktion von Allsy lelihydroresorcinen mit Wasserstoff, in Gegenwart von geeigneten überträgern, in einer Reaktionsphase zu den bisher nur auf umständliche Weise is. z. B. C r o s s -1 e y & R en o u f , Journal of the Chemical Society [igii] 99, S. iio2 bis iii7. vgl. auch Chem. Zentralblatt igii, II. S. 454) zugänglichen i-Alkylcyl~lohexan-3-onen gelangt, wodurch ein erheblicher- technischer Fortschritt erzielt ist.Process for the preparation of 1-alkyl cyclohexan-3-ones. It was found, that by reducing Allsy lelihydroresorcinen with hydrogen, in the presence from suitable transmitters, in a reaction phase to those previously only cumbersome Wise is. z. B. C r o s s -1 e y & R en o u f, Journal of the Chemical Society [igii] 99, pp. iio2 to iii7. see also Chem. Zentralblatt igii, II. p. 454) i-Alkylcyl ~ lohexan-3-one arrives, whereby a considerable technical progress is achieved.

Die auf diese Weise erhältlichen Produkte sind durch ausgesprochene physiologische Eigenschaften ausgezeichnet. Beispiel: Zoo Gewichtsteile Isopropyldihydroresorcin werden in alkoholischer oder acetonischer Lösung mit 2o Gewichtsteilen Tierkohle, auf der Gewichtsteile Palladium niedergeschlagen sind, in einer geeigneten Schüttelapparatur mit Wasserstoff behandelt, bis etwa (lie theoretische Menge dieses Gases aufgenommen ist. Das Reaktionsgemisch wird filtriert und das nach dem Verdampfen des Lösungsmittels hinterbleibende Produkt im Vakuum destilliert. Das so erhaltene i-Isopropylcyklohexan-3-on siedet konstant unter 15 mm Druck bei etwa 9.1.°. Der Schmelzpunkt des Semicarbazons liegt bei i87°.The products obtainable in this way are distinguished by pronounced physiological properties. Example: Zoo parts by weight of isopropyldihydroresorcinol are treated with hydrogen in an alcoholic or acetone solution with 20 parts by weight of animal charcoal, on which parts by weight of palladium are deposited, in a suitable shaking apparatus until about the theoretical amount of this gas has been absorbed. The reaction mixture is filtered and that after evaporation of the solvent behind residual product distilled in vacuo. the resulting i-Isopropylcyklohexan-one 3-constant boiling below 1 5 mm pressure at about 9.1. °. the melting point of the semicarbazone is I87 °.

An Stelle des in diesem Beispiel benutzten Isopropyldihydroresorcins können andere Alky ldihy dror esorcine, an Stelle der Palladiumtierkohle andere der für katalytische Hydrierungen üblichen Kontaktsubstanzen benutzt werden.Instead of the isopropyldihydroresorcinol used in this example other Alky ldihy dror esorcine, in place of the palladium animal charcoal others the contact substances customary for catalytic hydrogenations are used.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von i-Alkylcyklohexan-3-onen, dadurch gekennzeichnet, daß man Alkyldihydroresorcine mit Wasserstoff in Gegenwart von Kontaktsubstanzen behandelt.PATENT CLAIM: Process for the preparation of i-alkylcyklohexan-3-ones, characterized in that one alkyldihydroresorcinol with hydrogen in the presence treated by contact substances.
DEF50399D 1921-10-13 1921-10-13 Process for the preparation of 1-alkylcyclohexan-3-ones Expired DE389815C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF50399D DE389815C (en) 1921-10-13 1921-10-13 Process for the preparation of 1-alkylcyclohexan-3-ones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF50399D DE389815C (en) 1921-10-13 1921-10-13 Process for the preparation of 1-alkylcyclohexan-3-ones

Publications (1)

Publication Number Publication Date
DE389815C true DE389815C (en) 1924-02-08

Family

ID=7103775

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF50399D Expired DE389815C (en) 1921-10-13 1921-10-13 Process for the preparation of 1-alkylcyclohexan-3-ones

Country Status (1)

Country Link
DE (1) DE389815C (en)

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