CH143270A - Process for the preparation of a halogen naphthalene ketone. - Google Patents

Process for the preparation of a halogen naphthalene ketone.

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Publication number
CH143270A
CH143270A CH143270DA CH143270A CH 143270 A CH143270 A CH 143270A CH 143270D A CH143270D A CH 143270DA CH 143270 A CH143270 A CH 143270A
Authority
CH
Switzerland
Prior art keywords
preparation
naphthalene
halogen
naphthalene ketone
condensation
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 CH143270A publication Critical patent/CH143270A/en

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

Description

         

      Verfahren        znr    Darstellung eines     Halogennaphtalinketons.       Gegenstand vorliegenden Patentes ist ein       Verfahren        zier    Darstellung von     1,4-Dichlor-          8-acetyl-naphtalin,    dadurch gekennzeichnet,  dass man     1,4-Dichlor-naphtalirr    mit     Acetyl-          chlorid    bei Anwesenheit von     Aluminiumohlo-          rid    kondensiert.  



  <I>Beispiel:</I>  100     Gewichtsteile        1,4-Dichlornaphtalin,     45 Gewichtsteile     Acetylchlorid,   <B>135</B> Gewichts  teile Aluminiumchlorid werden in 500     C#re-          wichtsteilen        Schwefelkohlenstoff    15 Stunden  unter     Rückfluss    gerührt. Das Reaktionspro  dukt wird durch zweimalige Vakuumdestil  lation gereinigt. (Siedepunkt<B>2500,</B> 13 mm).  Es stellt ein gelbes Öl dar, mit sehr geringer       Neigung        zur        Kristallisation.        Ausbeute        87        %.  



      Process for the preparation of a halogen naphthalene ketone. The subject of the present patent is a process for the decorative preparation of 1,4-dichloro-8-acetyl-naphthalene, characterized in that 1,4-dichloro-naphthalene is condensed with acetyl chloride in the presence of aluminum chloride.



  <I> Example: </I> 100 parts by weight 1,4-dichloronaphthalene, 45 parts by weight acetyl chloride, 135 parts by weight aluminum chloride are stirred in 500 parts by weight carbon disulfide for 15 hours under reflux. The reaction product is cleaned by vacuum distillation twice. (Boiling point <B> 2500, </B> 13 mm). It is a yellow oil with very little tendency to crystallize. Yield 87%.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von 1,4-Dicblor- 8-acetyl-naphtalin, dadurch gekennzeichnet, dass man 1,4-Dichlor-naphtalin mit Acetyl- chlorid bei Anwesenheit von Aluminiumchlo rid kondensiert. Das Produkt stellt ein gelbes ÖL dar, mit sehr geringer Neigung zur Kristallisation. UN TERAN SPRüCHE 1. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Kondensation in Gegenwart eines indifferenten Lösungs mittels vornimmt. . PATENT CLAIM: A process for the preparation of 1,4-dicbloro-8-acetyl-naphthalene, characterized in that 1,4-dichloro-naphthalene is condensed with acetyl chloride in the presence of aluminum chloride. The product is a yellow oil with a very low tendency to crystallize. UN TERAN PROSPECTS 1. Process according to claim, characterized in that the condensation is carried out in the presence of an inert solvent. . Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Kondensation in Schwefelkohlenstoff auf dem Wasser bad vor sich gehen lässt. Process according to patent claim, characterized in that the condensation in carbon disulfide is allowed to proceed on the water bath.
CH143270D 1927-11-26 1928-11-24 Process for the preparation of a halogen naphthalene ketone. CH143270A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE143270X 1927-11-26
CH141524T 1930-08-15

Publications (1)

Publication Number Publication Date
CH143270A true CH143270A (en) 1930-10-31

Family

ID=25713772

Family Applications (1)

Application Number Title Priority Date Filing Date
CH143270D CH143270A (en) 1927-11-26 1928-11-24 Process for the preparation of a halogen naphthalene ketone.

Country Status (1)

Country Link
CH (1) CH143270A (en)

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