DE577256C - Process for the preparation of unsaturated ketone alcohols - Google Patents

Process for the preparation of unsaturated ketone alcohols

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Publication number
DE577256C
DE577256C DEI41547D DEI0041547D DE577256C DE 577256 C DE577256 C DE 577256C DE I41547 D DEI41547 D DE I41547D DE I0041547 D DEI0041547 D DE I0041547D DE 577256 C DE577256 C DE 577256C
Authority
DE
Germany
Prior art keywords
unsaturated ketone
ketone alcohols
preparation
alcohols
dimethylolacetone
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
DEI41547D
Other languages
German (de)
Inventor
Dr Walter Flemming
Dr Horst-Dietrich Von De Horst
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 DEI41547D priority Critical patent/DE577256C/en
Application granted granted Critical
Publication of DE577256C publication Critical patent/DE577256C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C33/00Unsaturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
    • C07C33/02Acyclic alcohols with carbon-to-carbon double bonds
    • C07C33/025Acyclic alcohols with carbon-to-carbon double bonds with only one double bond
    • 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
    • C07C45/61Preparation 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
    • C07C45/65Preparation 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
    • C07C45/66Preparation 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 by dehydration

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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 ungesättigten Ketonalkoholen Es wurde gefunden, daß man auf einfache Weise zu ungesättigten Ketonalkoholen gelangt, wenn man aus mindestens zwei Methylolgruppen im Mölekül enthaltenden Oxyketonen Wasser abspaltet.Process for the preparation of unsaturated ketone alcohols It has been found that unsaturated ketone alcohols can be obtained in a simple manner if from at least two methylol groups in the Mölekül containing oxyketones water splits off.

Geeignete Ausgangsstoffe sind z. B. die nach dem Verfahren des Patents 544 887 erhältlichen Oxyoxoverbindungen sowie die nach dem Verfahren des Patents 575 949 durch Kondensation von Ketonen mit Formaldehyd oder formaldehydabspaltenden Mitteln in neutraler Lösung bei erhöhter Temperatur erhältlichen Produkte.Suitable starting materials are, for. B. the process of the patent 544 887 oxyoxo compounds obtainable as well as those by the method of the patent 575 949 by condensation of ketones with formaldehyde or formaldehyde-releasing agents Agents available in neutral solution at elevated temperature.

Die Wasserabspaltung kann durch Erhitzen der Ausgangsstoffe unter vermindertem Druck in Gegenwart oder Abwesenheit von wasserabspaltenden Mitteln vorgenommen werden. Als wasserabspaltende Mittel kommen z. B. Oxyde, wie Aluminiumoxyd, Säuren, wie Phosphorsäure, oder Salze, wie Aluminiumphosphat, in Betracht. Man vermeidet jedoch zweckmäßig solche wasserabspaltende Verbindungen, die wie Natriummetaborat, Aluminiumchlorid u. dgl. polymerisierend wirken können.The elimination of water can be achieved by heating the starting materials below reduced pressure in the presence or absence of dehydrating agents be made. As dehydrating agents come z. B. Oxides, such as aluminum oxide, Acids, such as phosphoric acid, or salts, such as aluminum phosphate, are suitable. One avoids however, it is advisable to use those dehydrating compounds such as sodium metaborate, Aluminum chloride and the like can have a polymerizing effect.

Die erhaltenen ungesättigten Ketonalkohole können zu mannigfaltigen chemischen Umsetzungen sowie in Form ihrer Polymerisationsprodukte als Ausgangsstoffe in der Lack- und Kunststoffindustrie Verwendung finden. Beispiel r Dimethylolaceton-hergestellt gemäß dem Verfahren des Patents 544887 -, das pro Kilogramm mit 7 cm3 89°1oiger Phosphorsäure versetzt ist, wird im Vakuum bei 16 mm Druck destilliert. Es geht eine nahezu farblose, leicht bewegliche Flüssigkeit über, die der Hauptmenge nach aus 2-Oxymethyl-3-oxobuten-r, 2 von der Formel besteht. Beispiele Das durch Kondensation von Aceton mit Formaldehyd in neutraler Lösung erhältliche Dimethylolaceton liefert unter den im Beispiel z angegebenen Bedingungen ein aus ungesättigten Ketonalkoholen bestehendes Destillat in einer Ausbeute von über 7o % des Ausgangsmaterials.The unsaturated ketone alcohols obtained can be used in a wide variety of chemical reactions and in the form of their polymerization products as starting materials in the paint and plastics industries. Example r Dimethylolacetone, produced according to the process of patent 544887, to which 7 cm3 of 89 ° phosphoric acid per kilogram is added, is distilled in vacuo at 16 mm pressure. An almost colorless, easily mobile liquid passes over, the bulk of which is composed of 2-oxymethyl-3-oxobutene-r, 2 of the formula consists. EXAMPLES The dimethylolacetone obtainable by condensation of acetone with formaldehyde in neutral solution gives under the conditions given in example z a distillate consisting of unsaturated ketone alcohols in a yield of more than 70 % of the starting material.

Beispiel 3 Eine Mischung von Dimethylolaceton mit 8 °/o Aluminiumoxyd ergibt bei der Vakuumdestillation unter 16 mm Druck ein aus ungesättigten Ketonalkoholen bestehendes Destillat in einer Ausbeute von 54 °1o des Ausgangsmaterials. Beispiel ¢ Durch Destillation von Dimethylolmethyläthylketon, das pro Kilogramm einen Zusatz von 84g Aluminiumoxyd erhält, bei Atmosphärendruck entsteht in einer Ausbeute von 70 0A des Ausgangsmaterials ein Gemisch von ungesättigten Ketonalkoholen.EXAMPLE 3 A mixture of dimethylolacetone with 8% aluminum oxide gives, in vacuum distillation under 16 mm pressure, a distillate consisting of unsaturated ketone alcohols in a yield of 54 ° 10 of the starting material. EXAMPLE • By distilling dimethylolmethylethyl ketone, which contains 84 g of aluminum oxide per kilogram, at atmospheric pressure, a mixture of unsaturated ketone alcohols is obtained in a yield of 70 ° of the starting material.

Beispiel 5 Man destilliert Dimethylolaceton, dem pro Kilogramm 5o g Aluminiumphosphat zugesetzt sind, bei 16 mm Druck und erhält den im Beispiel r beschriebenen ungesättigten Ketonalkohol in einer Ausbeute von 56 (Rohprodukt).Example 5 Dimethylolacetone is distilled, which is 5o per kilogram g aluminum phosphate are added, at 16 mm pressure and receives the in example r unsaturated ketone alcohol described in a yield of 56 (crude product).

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von ungesättigten Ketonalkoholen, dadurch gekennzeichnet, daB man aus Oxyketonen, welche mehr als eine Methylolgruppe enthalten, Wasser abspaltet.PATENT CLAIM: Process for the preparation of unsaturated ketone alcohols, characterized in that one consists of oxyketones which contain more than one methylol group contain, splits off water.
DEI41547D 1931-05-16 1931-05-16 Process for the preparation of unsaturated ketone alcohols Expired DE577256C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI41547D DE577256C (en) 1931-05-16 1931-05-16 Process for the preparation of unsaturated ketone alcohols

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI41547D DE577256C (en) 1931-05-16 1931-05-16 Process for the preparation of unsaturated ketone alcohols

Publications (1)

Publication Number Publication Date
DE577256C true DE577256C (en) 1933-06-01

Family

ID=7190570

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI41547D Expired DE577256C (en) 1931-05-16 1931-05-16 Process for the preparation of unsaturated ketone alcohols

Country Status (1)

Country Link
DE (1) DE577256C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE956272C (en) * 1954-04-17 1957-01-17 Rheinpreussen Ag Process for the production of crystal clear polymerisation products
DE965402C (en) * 1953-08-04 1957-06-06 Rheinpreussen Ag Process for the preparation of 2-methylol-3-ketobutene- (1,2)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE965402C (en) * 1953-08-04 1957-06-06 Rheinpreussen Ag Process for the preparation of 2-methylol-3-ketobutene- (1,2)
DE956272C (en) * 1954-04-17 1957-01-17 Rheinpreussen Ag Process for the production of crystal clear polymerisation products

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