CH99520A - Process for the preparation of a 4-oxynaphthalene-1-aryl ketone. - Google Patents

Process for the preparation of a 4-oxynaphthalene-1-aryl ketone.

Info

Publication number
CH99520A
CH99520A CH99520DA CH99520A CH 99520 A CH99520 A CH 99520A CH 99520D A CH99520D A CH 99520DA CH 99520 A CH99520 A CH 99520A
Authority
CH
Switzerland
Prior art keywords
oxynaphthalene
ketone
preparation
aryl ketone
heated
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH99520A publication Critical patent/CH99520A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
    • C07C49/76—Ketones containing a keto group bound to a six-membered aromatic ring
    • C07C49/82—Ketones containing a keto group bound to a six-membered aromatic ring containing hydroxy groups
    • C07C49/83—Ketones containing a keto group bound to a six-membered aromatic ring containing hydroxy groups polycyclic
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/61—Preparation 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
    • C07C45/67—Preparation 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 isomerisation; by change of size of the carbon skeleton
    • C07C45/673—Preparation 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 isomerisation; by change of size of the carbon skeleton by change of size of the carbon skeleton

Description

  

  Verfahren zur Herstellung eines     4-Oxynaphthalin-l-ai-ylketons.       Es wurde gefunden, dass man ein     4-Oxy-          naphtlialin-l-ar@ylketon,    das     4-Oxynaphtlialin-          1-phenylketon,    herstellen kann, wenn man  die     4-Oxyiiaphthalin-l-phenylketon-3-carbon-          säure    auf höhere Temperatur, vorzugsweise  in Gegenwart eines Verdünnungsmittels, er  hitzt. Das so gewonnene     4-Oxynaphthalin-l-          phenylketon    bildet ein weisses Pulver, das,  aus Benzol umgelöst, bei<B>165'</B> schmilzt und  sich mit gelber Farbe in Natronlauge löst.

      <I>Beispiel 1:</I>  100 Teile     4-Oxynaphthalin-l-phenyllzeton-          3-carbonsäure    werden mit 100 Teilen     Dime-          thylanilin    auf 110 o-150 0, bis zum Aufhören  der     Kohlensäureentwicklung,    vorsichtig er  wärmt. Beim Erkalten     kristallisiert    das     4-          Oxynaphthalin-l-phenylketon    aus. Zur voll  ständigen Reinigung kann es noch aus Benzol  umgelöst werden.  



       Beispiel   <I>2:</I>  100 Teile     4-Oxynaphthalin-l-phenylketon-          3-carbonsäure        werden        mit        400        Teilen    5     %iger     Schwefelsäure in einem geschlossenen Gefäss    auf 180 o-190 0 erwärmt. Das in fast reinem  Zustand erhaltene     4-Oxynaphthalin-l-phenyl-          keton    kann noch aus Benzol umgelöst werden.



  Process for the preparation of a 4-oxynaphthalene-1-ai-yl ketone. It has been found that a 4-oxynaphthalene-1-ar @ yl ketone, 4-oxynaphthalene-1-phenyl ketone, can be prepared if the 4-oxynaphthalene-1-phenyl ketone-3-carboxylic acid is heated to a higher temperature , preferably in the presence of a diluent, it heats. The 4-oxynaphthalene-1-phenyl ketone obtained in this way forms a white powder that, when dissolved from benzene, melts at <B> 165 '</B> and dissolves in caustic soda with a yellow color.

      <I> Example 1: </I> 100 parts of 4-oxynaphthalene-1-phenyllacetone-3-carboxylic acid are carefully heated with 100 parts of dimethylaniline to 110-150 ° until the evolution of carbonic acid ceases. The 4-oxynaphthalene-1-phenyl ketone crystallizes out on cooling. For complete cleaning, it can also be converted from benzene.



       Example <I> 2: </I> 100 parts of 4-oxynaphthalene-1-phenylketone-3-carboxylic acid are heated to 180-190 ° with 400 parts of 5% sulfuric acid in a closed vessel. The 4-oxynaphthalene-1-phenyl ketone obtained in an almost pure state can still be dissolved from benzene.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines 4-Oxy- naphthalin-l-arylketons, des 4-Oxynaphthalin- 1-phenylketons, dadurch gekennzeichnet, dass mau die 4-Oxynaphthalin-l-phenylketon-3- carbonsäure auf höhere Temperatur erhitzt. Das so gewonnene 4-Oxynaphthalin-l-pheriyl- keton bildet ein weisses Pulver, das, aus Benzol umgelöst, bei<B>165'</B> schmilzt und sich mit gelber Farbe in Natronlauge löst. PATENT CLAIM: Process for the production of a 4-oxynaphthalene-1-aryl ketone, the 4-oxynaphthalene-1-phenyl ketone, characterized in that the 4-oxynaphthalene-1-phenyl ketone-3-carboxylic acid is heated to a higher temperature. The 4-oxynaphthalene-1-pheriyl ketone obtained in this way forms a white powder which, when dissolved from benzene, melts at <B> 165 '</B> and dissolves in caustic soda with a yellow color. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die 4-Oxynaphthaliri- 1-phenylketon-3-carbonsäure auf höhere Tem peratur in Gegenwart eines Verdünnungs mittels erhitzt. SUBSTANTIAL CLAIM: Process according to patent claim, characterized in that the 4-oxynaphthaliri- 1-phenylketone-3-carboxylic acid is heated to a higher temperature in the presence of a diluent.
CH99520D 1922-02-11 1922-02-11 Process for the preparation of a 4-oxynaphthalene-1-aryl ketone. CH99520A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH99520T 1922-02-11

Publications (1)

Publication Number Publication Date
CH99520A true CH99520A (en) 1923-06-16

Family

ID=4357470

Family Applications (1)

Application Number Title Priority Date Filing Date
CH99520D CH99520A (en) 1922-02-11 1922-02-11 Process for the preparation of a 4-oxynaphthalene-1-aryl ketone.

Country Status (1)

Country Link
CH (1) CH99520A (en)

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