DE606539C - Process for the preparation of aliphatic carbonyl compounds - Google Patents

Process for the preparation of aliphatic carbonyl compounds

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Publication number
DE606539C
DE606539C DEB153035D DEB0153035D DE606539C DE 606539 C DE606539 C DE 606539C DE B153035 D DEB153035 D DE B153035D DE B0153035 D DEB0153035 D DE B0153035D DE 606539 C DE606539 C DE 606539C
Authority
DE
Germany
Prior art keywords
salts
carbonyl compounds
aliphatic
preparation
aliphatic carbonyl
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
DEB153035D
Other languages
German (de)
Inventor
Dr Hermann Prueckner
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.)
H TH BOEHME AKT GES
Original Assignee
H TH BOEHME AKT GES
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 H TH BOEHME AKT GES filed Critical H TH BOEHME AKT GES
Priority to DEB153035D priority Critical patent/DE606539C/en
Application granted granted Critical
Publication of DE606539C publication Critical patent/DE606539C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/45Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by condensation
    • C07C45/48Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by condensation involving decarboxylation
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/51Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition
    • C07C45/54Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition of compounds containing doubly bound oxygen atoms, e.g. esters

Description

Verfahren zur Herstellung von aliphatischen Carbonylverbindungen Es ist bekannt, aliphatische Carbonylverbindungen dadurch herzustellen, daß man fettsaure Salze oder Gemische von solchen der trockenen Destillation unterwirft. Wendet man dabei ausschließlich Salze von Carbonsäugen mit zwei oder mehr Kohlenstoffatomen an, so erhält man Ketone, während man bei Verarbeitung von Gemischen von Formierten mit Salzen anderer Fettsäuren zu Aldehyden. gelangt.Process for the preparation of aliphatic carbonyl compounds Es it is known to produce aliphatic carbonyl compounds by using fatty acid Salts or mixtures of such subjected to dry distillation. If you turn only salts of carboxylic acids with two or more carbon atoms on, ketones are obtained, whereas mixtures of formates are obtained when processing with salts of other fatty acids to form aldehydes. got.

Es wurde nun. gefunden, daß sich die Umsetzung der Salze höherer Fütts,äuren zu Carbonylverbindungen in noch vorteilhafterer Weise bewerkstelligen läßt und da.ß man die Carbonylverbindungen in fast quantitativer Ausbeute erhält, wenn die Operation inGegenwart von Lösungsmitteln vorgenommen wird. Der Zusatz eines Lösungsmittels bewirkt einen. wesentlich glatteren und schnelleren Reaktionsverlauf und ermöglicht das Arbeiten 'bei weniger hohen Temperaturen.It was now. found that the conversion of the salts of higher feed acids to carbonyl compounds in an even more advantageous manner and da.ß the carbonyl compounds are obtained in almost quantitative yield if the operation in the presence of solvents. The addition of a solvent causes one. significantly smoother and faster reaction process and enables working 'at less high temperatures.

Zur Ausführung des Verfahrens eignen sich Salze des Calciums, Bariums, Strontiums und Magnesiums; Allkalisalze sowie auch Seh.wermetallsalze der aliphatischen CarbQnsällren. Man kann auch Gemische von Salzen der Fettsäuren mit verschiedenen Basen verwenden. Die Umsetzung der Calciumsalze von Fettsäuren mit mehr als zwei Kohlenstoffatomen mit Calciumformiat ist Gegenstand des Patents 559 731 und wird hier nicht beansprucht.Salts of calcium, barium, Strontiums and magnesium; Allkalisalze as well as visual thermal metal salts of the aliphatic CarbQnsällren. One can also use mixtures of salts of fatty acids with different ones Use bases. Implementation of the calcium salts of fatty acids with more than two Carbon atoms with calcium formate is the subject of patent 559 731 and is not claimed here.

Das Verfahren kann bei gewöhnlichem oder erhöhtem Druck ausgeführt werden. Die Temperatur wird zweckmäßig etwa zwischen i 5o und q.00° gehalten. Als Lösungsmittel kommen z. B. Tetrahydromaphthalin, Dodecan, Butylalkohol, Cyclohexan, Benzol u. dgl. in Frage. Besonders vorteilhaft ist ges jedoch, Bierfür die bei der Reaktion als Endprodukt entstehende Carbonylverbindung zu verwenden, z. B. bei Verarbeitung von stearinsaurem Natrium und ameisensaurem Galcium "den Stearinaldehyd.The process can be carried out at ordinary or elevated pressure will. The temperature is expediently kept between about 150 and 100 °. as Solvents come e.g. B. tetrahydromaphthalene, dodecane, butyl alcohol, cyclohexane, Benzene and the like. However, beer is particularly advantageous for those at the Reaction to use resulting carbonyl compound as the end product, e.g. B. in processing of sodium stearate and galcium form "stearic aldehyde.

Beispiel i 5 g stearinsaures Natrium, 1,8 g ameisensaures Calcium werden in i o g Cyclohexan unter mäßigem Erwärmen gelöst. Das Gemisch wird nun zunächst in ein geschlossenes Reaktionsgefäß gebracht und auf 3oo° erhitzt, wobei der Druck auf etwa 3o atü ansteigt. Man :erhält die Temperatur auf dieser Höhe 2 Stunden und läßt dann abkühlen. Als Reaktionsprodukt erhält man in hoher Ausbeute S.tearü,aldtehyd, der durch Abdestillieren des Lösungsmittels isoliert wird. An Stelle von. Cyclohexan u. dgl. kann auch Wasser verwendet werden. Beispiel 2 5o Gewichtsteile kokosfettsaures Calcium, 18 Gewichtsteile Calciumacetat, Zoo Gewichtsteile Benzol werden in .einen. Schüttellautoklaven gebracht. Man heizt dann auf 33o° an, wobei der Druck auf 25 atü steigt und @erhält i -Stunde auf dieser Temperatur. Dann läßt man, erkalten, zersetzt das Reaktionsprodukt mit Salzsäure; - äthert aus, trocknet die ätherische Lösung und destilhert den Äther ah. Der Rückstand best=eht gemäß der Analyse zu 5o olo aus Keton, welches im wesentlichen der Formel C H3 . C O . (C H2) 10 # C H,; entspricht.Example i 5 g of sodium stearate, 1.8 g of calcium formate are dissolved in 10 g of cyclohexane with moderate heating. The mixture is now initially placed in a closed reaction vessel and heated to 3oo °, the pressure rises to about 3o atm. One: the temperature is obtained at this level for 2 hours and then lets cool. The reaction product obtained is S.tearü, aldtehyd, which is isolated by distilling off the solvent. Instead of. Cyclohexane and the like, water can also be used. Example 2 50 parts by weight of coconut fatty acid Calcium, 18 parts by weight calcium acetate, Zoo parts by weight benzene are in .eine. Brought shaking autoclaves. The temperature is then raised to 33o °, the pressure being reduced to 25 ° atü rises and @ receives i -hour at this temperature. then leaves when cooled, the reaction product is decomposed with hydrochloric acid; - ethers out, dries the ethereal solution and distil the ether ah. The arrears are according to the analysis to 5o olo from ketone, which essentially of the formula C H3. C O. (C H2) 10 # C H ,; is equivalent to.

Claims (1)

PATENTANSPRÜCHE: i. Verfahren zur Herstellung aliphati= scher Carbonylverbindungen durch Erhitzen von Salzen aliphatischer Carbonsäuren, dadurch gekennzeichnet, daß die Salze von aliphatischen Carbomsäuren bei Gegenwart von Lösungsmitteln, insbesondere organischer Natur, zur Reaktion gebracht werden,, wobei die Umsetzung der Calciumsalze von Fettsäuren mit mehr als zwei Kohlenstoffatomen mit Calciumformiat ausgenommen sein soll. a. Verfahren gemäß Anspruch i, dadurch gekennzeichnet, daß Gemische von Salzen verschiedener Basen verwendet werden.PATENT CLAIMS: i. Process for the production of aliphatic carbonyl compounds by heating salts of aliphatic carboxylic acids, characterized in that the salts of aliphatic carbomic acids in the presence of solvents, in particular organic nature, to be reacted, being the reaction of the calcium salts excluded from fatty acids with more than two carbon atoms with calcium formate should be. a. Process according to claim i, characterized in that mixtures of Salts of various bases can be used.
DEB153035D 1931-11-15 1931-11-15 Process for the preparation of aliphatic carbonyl compounds Expired DE606539C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB153035D DE606539C (en) 1931-11-15 1931-11-15 Process for the preparation of aliphatic carbonyl compounds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB153035D DE606539C (en) 1931-11-15 1931-11-15 Process for the preparation of aliphatic carbonyl compounds

Publications (1)

Publication Number Publication Date
DE606539C true DE606539C (en) 1934-12-04

Family

ID=7002759

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB153035D Expired DE606539C (en) 1931-11-15 1931-11-15 Process for the preparation of aliphatic carbonyl compounds

Country Status (1)

Country Link
DE (1) DE606539C (en)

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