CH128896A - Process for the preparation of a mixture of isomeric ring ketones of the aromatic series. - Google Patents

Process for the preparation of a mixture of isomeric ring ketones of the aromatic series.

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Publication number
CH128896A
CH128896A CH128896DA CH128896A CH 128896 A CH128896 A CH 128896A CH 128896D A CH128896D A CH 128896DA CH 128896 A CH128896 A CH 128896A
Authority
CH
Switzerland
Prior art keywords
mixture
preparation
aromatic series
ring ketones
isomeric
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
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
Publication of CH128896A publication Critical patent/CH128896A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Darstellung eines Gemisches von     isomer    en     Ringketonen    der  aromatischen Reihe.    Gegenstand dieser Erfindung ist ein Ver  fahren zur Darstellung eines Gemisches von       isomeren        Ringketonen    der aromatischen Reihe,  welches dadurch gekennzeichnet ist, dass man       Crotonsäure,        o-Dichlorbenzol    und     Aluminium-          chlorid    bei höherer Temperatur aufeinander  einwirken lässt. Das Produkt soll zur Her  stellung von Farbstoffen Verwendung finden.

    <I>Beispiel:</I>  Zu     1$4    Gewichtsteilen gepulvertem Alu  miniumchlorid und 420 Gewichtsteilen     o-Di-          chlorbenzol    werden unter Rühren bei ge  wöhnlicher Temperatur in kleinen Anteilen  45 Gewichtsteile     Crotonsäure    gegeben. Man       steigert    die Temperatur bis auf 100   und  darüber und hält sie einige Stunden. Hier  auf giesst man auf Eis und destilliert mit  Wasserdampf.

   Bei vorsichtiger     Destillation     geht anfangs nur     o-Dichlorbenzol    über, dann  ein Gemisch verschiedener     dihalogenierter            Ringketone.    Dieses Gemisch bleibt flüssig  und siedet bei     etwa    200  .  



  Das Produkt ist     identisch    mit dem Pro  dukt des     Verfahrens    des     Zusatzpatentes     Nr. 127699.



  Process for the preparation of a mixture of isomeric ring ketones of the aromatic series. This invention relates to a method for the preparation of a mixture of isomeric ring ketones of the aromatic series, which is characterized in that crotonic acid, o-dichlorobenzene and aluminum chloride are allowed to act on one another at a higher temperature. The product is intended to be used for the manufacture of dyes.

    <I> Example: </I> To 14 parts by weight of powdered aluminum chloride and 420 parts by weight of o-dichlorobenzene, 45 parts by weight of crotonic acid are added in small proportions at normal temperature while stirring. The temperature is raised to 100 and above and held for a few hours. Here it is poured onto ice and distilled with steam.

   With careful distillation only o-dichlorobenzene initially passes over, then a mixture of different dihalogenated ring ketones. This mixture remains liquid and boils at around 200.



  The product is identical to the product of the process of the additional patent No. 127699.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Ge misches von isomeren aromatischen Ring ketonen, dadurch gekennzeichnet, dass man Crotonsäure, o-Dichlorbenzol und Aluminium chlorid bei höherer Temperatur aufeinander einwirken lässt. Das erhaltene Gemisch ist flüssig und siedet bei etwa 200 und ist identisch mit dem Produkt des Verfahrens des Zusatzpatentes Nr. 127699. Das Produkt soll zur Herstellung von Farbstoffen Verwen dung finden. PATENT CLAIM: Process for the preparation of a mixture of isomeric aromatic ring ketones, characterized in that crotonic acid, o-dichlorobenzene and aluminum chloride are allowed to act on one another at a higher temperature. The resulting mixture is liquid and boils at about 200 and is identical to the product of the process of additional patent no. 127699. The product is said to be used for the production of dyes.
CH128896D 1926-03-26 1927-03-14 Process for the preparation of a mixture of isomeric ring ketones of the aromatic series. CH128896A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE128896X 1926-03-26
CH126404T 1927-03-14

Publications (1)

Publication Number Publication Date
CH128896A true CH128896A (en) 1928-11-16

Family

ID=25710654

Family Applications (1)

Application Number Title Priority Date Filing Date
CH128896D CH128896A (en) 1926-03-26 1927-03-14 Process for the preparation of a mixture of isomeric ring ketones of the aromatic series.

Country Status (1)

Country Link
CH (1) CH128896A (en)

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