DE389815C - Process for the preparation of 1-alkylcyclohexan-3-ones - Google Patents
Process for the preparation of 1-alkylcyclohexan-3-onesInfo
- 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
Links
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
Landscapes
- 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)
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) |
-
1921
- 1921-10-13 DE DEF50399D patent/DE389815C/en not_active Expired
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