DE748289C - Process for the production of butene- (1) -one- (3) - Google Patents

Process for the production of butene- (1) -one- (3)

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Publication number
DE748289C
DE748289C DEC56268D DEC0056268D DE748289C DE 748289 C DE748289 C DE 748289C DE C56268 D DEC56268 D DE C56268D DE C0056268 D DEC0056268 D DE C0056268D DE 748289 C DE748289 C DE 748289C
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DE
Germany
Prior art keywords
butene
solution
production
solutions
cleavage
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
DEC56268D
Other languages
German (de)
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 filed Critical
Priority to DEC56268D priority Critical patent/DE748289C/en
Application granted granted Critical
Publication of DE748289C publication Critical patent/DE748289C/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
    • C07C45/26Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by hydration of carbon-to-carbon triple bonds
    • 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
    • C07C45/78Separation; Purification; Stabilisation; Use of additives
    • C07C45/81Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
    • C07C45/82Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation

Description

Verfahren .zur Gewinnung von Buten-(1)-on-(3) In der Patentschrift 594 083 wird ein Verfahren zur Herstellung von Buten-(i)-on-(3) aus Vinylacetylen beschrieben. In quecksilberhaltige Schwefelsäure wird Vinylacetylen eingeleitet und die Lösur)g anschließend destilliert, gegebenenfälls nach vorangegangener Neutralisation. Buten-(i)-ön-(3) kann auch durch überschüssiges Viriylacetvlen aus der warmen Lösung während der Entstehung ausgetrieben werden. Die Ausbeuten in diesem Verfahren erreichen 8o bis 85%, sind aber meist wesentlich geringer. Das ist zurückzuführen auf die verharzende Wirkung der starken, heißen Säuren oder auf die ungenügende "Zerlegung von Butanol-(i)-on-(3) in der neutralisierten Lösung.Process for obtaining butene- (1) -one- (3) in the patent 594 083 describes a process for the production of buten- (i) -one- (3) from vinyl acetylene described. Vinylacetylene is introduced into mercury-containing sulfuric acid and the solution is then distilled, if necessary after previous neutralization. Butene- (i) -ön- (3) can also be obtained from the warm solution through excess Viriylacetvlen be expelled during the formation. The yields achieved in this process 8o to 85%, but are usually much lower. That is due to the resinifying effect of strong, hot acids or insufficient "decomposition of butanol- (i) -one- (3) in the neutralized solution.

Es wurde gefunden, daß bei der Hydratisierung des Vinylacetylens in erster Linie Butano,l-(i)-on-(3) entsteht, daneben sein Äther, der 3, 3'-Diketobutvläther. Das Buten-(i)-on-(3) entsteht erst durch sekundäre Spaltung dieser Stoffe. Dabei erwies es sich- überraschenderweise als vorteilhaft, die- Spaltung des Butanol-(i)-ons-(3) und 3, 3'-Diketobutyläthers durch Destillation der schwach alkalisch gestellten Lösung durchzuführen. Die Spaltung geht rasch und in sehr guter Ausbeute vor sich. Die alkalische Reaktion wird am zweckmäßigsten hergestellt mit Stoffen, wie -.\7atriumcarbonat, Dinatriumphosphat oder Calciumhvdroxvd. Die Verwendbarkeit alkalischer Katalysatoren zur Spaltung bei erhöhten Temperaturen war nicht vorauszusehen, da Butanol-(i)-on-(3) und Buten-(i)-on-(3) durch Alkalien leicht verharzen oder polyinerisieren. . Beispiel Eine durch Hydratisierung von Vinylacetylen entstandene Lösung, die. etwa 28 bis 30% Butanol-(i)-on-(3), io bis 12% 3, 3@-Diketobutylä ther, weniger als i 0/ö Buten-(i )-ön-(3) und 6o0/" Wasser enthält, wird mit einer 20/,i,-en Sädalösung schwach alkalisch gestellt. so daß sie bezüglich ihrer Alkalität weniger als n/io ist, und destilliert. Dabei l,eht Buten-(i)-on-(3) mit Wasser als Tiefsiedegemisch bei 72° über in einer Ausbeute bis zu c)8 % der Theorie: als Rückstand hinterbleiben Spuren nicht destillierbarer Konden- sationsprodukte in der alkalischen Flüssigkeit. Statt Soda können andere schwach alkalisch reagierende --Mittel. wie z. B. Kalk oder Di- natriumpohsphat. -verwendet werden. Die Spaltung verläuft sehr glatt mit derwässerigen Lösung eines durch Vakuumdestillation der neutral gestellten Hydratisierungslösung ab- -etrennten P)titanOlOn-DllietobutliN'lätlier-Ge- inisches. (Eine Lösung von Hvdratisiertings- produkten des -#'im-lacetvlens der oben ange- führten Zusammensetzung entsteht durch Ein- lciten von Vinvlacetvlen bei ;7o'--' in eine dueck- silberosydhaltige i,#°/oige Schwefelsäure bis zur Aufnahme von 3 2 Teilen `'invlacetvlen auf roü Teile der hatalysatorlösung. ) It has been found that the hydration of vinyl acetylene primarily produces butano, l- (i) -one- (3), along with its ether, the 3,3'-diketobutyl ether. The butene- (i) -one- (3) only arises through secondary cleavage of these substances. It was found, surprisingly, to be advantageous to carry out the cleavage of the butanol- (i) -one- (3) and 3,3'-diketobutyl ether by distilling the weakly alkaline solution. The cleavage takes place quickly and in very good yield. The alkaline reaction is best produced with substances such as sodium carbonate, disodium phosphate or calcium hydroxide. The use of alkaline catalysts for cleavage at elevated temperatures could not be foreseen, since butanol- (i) -one- (3) and butene- (i) -one- (3) easily resinify or polymerize with alkalis. . Example A solution formed by the hydration of vinyl acetylene which. about 28 to 30% butanol- (i) -one- (3), io to 12% 3, 3 @ -diketobutyl ether, less than i 0 / ö butene- (i) -on- (3) and 6o0 / " Contains water, is made slightly alkaline with a 20% Säda solution so that its alkalinity is less than n / io, and distilled, with 1, butene- (i) -one- (3) as well Water as a low-boiling mixture at 72 ° above in a yield of up to c) 8% of theory: traces of non-distillable condensate remain as a residue. cation products in the alkaline liquid. Instead of soda, others can be weakly alkaline reactive agents. such as B. lime or di- sodium phosphate. -be used. the Cleavage proceeds very smoothly with the aqueous Solution of one by vacuum distillation of the neutralized hydrating solution -separated P) titanOlOn-DllietobutliN'lätlier-Ge inish. (A solution from updated products of the - # 'im-lacetvlens of the above led composition is created by introducing lciten von Vinvlacetvlen bei; 7o '-' in a dueck- Sulfuric acid containing silver osside to to accommodate 3 2 parts '' invlacetvlen on roü parts of the hatalyser solution. )

Claims (1)

PATENTANSPRUCH: \`erfahren zur Gewinnung von Bir- ten-(i-)-ori-(3) aus durch Hydr:tti:ierun, von VinvlacetvIen erhaltenen «-ässeri@@-en Lösungen, dadurch gekennzz:cl@n#@t, -1a1.1 diese wässerigen Lösungen irr Ge-unwart geringer -Mengen alkalischer Stoffe ]ea:l- liert werden.
Zur Abgrenzung des Anineldungsgeren- standes c-oni Stand der "Technik ist im Er- teilungsverfahren folgende Druckschrift üi Betracht gezogen worden deutsche Patentschrift ..... . Nr. @o.I @@3.
PATENT CLAIM: \ `experienced in the extraction of bir- ten- (i -) - ori- (3) from by hydr: tti: ierun, «-ässeri @@ - en obtained from VinvlacetvIen Solutions, marked thereby: cl @ n # @ t, -1a1.1 these watery solutions are wrong small amounts of alkaline substances] ea: l- be lured.
To delimit the Anineldungsgeren- standes c-oni state of the art "technology is in the division method following publication üi Been considered German patent specification ...... No. @oI @@ 3.
DEC56268D 1937-02-25 1937-02-25 Process for the production of butene- (1) -one- (3) Expired DE748289C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEC56268D DE748289C (en) 1937-02-25 1937-02-25 Process for the production of butene- (1) -one- (3)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC56268D DE748289C (en) 1937-02-25 1937-02-25 Process for the production of butene- (1) -one- (3)

Publications (1)

Publication Number Publication Date
DE748289C true DE748289C (en) 1944-10-31

Family

ID=7028296

Family Applications (1)

Application Number Title Priority Date Filing Date
DEC56268D Expired DE748289C (en) 1937-02-25 1937-02-25 Process for the production of butene- (1) -one- (3)

Country Status (1)

Country Link
DE (1) DE748289C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE952801C (en) * 1952-08-29 1956-11-22 Basf Ag Process for the liberation of technical products containing small amounts of acetylene alcohol as admixture from these admixtures

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE591083C (en) * 1934-01-15 Unbekannte Erben Des William E Electromagnetic horn

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE591083C (en) * 1934-01-15 Unbekannte Erben Des William E Electromagnetic horn

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE952801C (en) * 1952-08-29 1956-11-22 Basf Ag Process for the liberation of technical products containing small amounts of acetylene alcohol as admixture from these admixtures

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