CH190890A - Process for the production of a new intermediate product. - Google Patents

Process for the production of a new intermediate product.

Info

Publication number
CH190890A
CH190890A CH190890DA CH190890A CH 190890 A CH190890 A CH 190890A CH 190890D A CH190890D A CH 190890DA CH 190890 A CH190890 A CH 190890A
Authority
CH
Switzerland
Prior art keywords
production
methyl
intermediate product
new intermediate
red
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 CH190890A publication Critical patent/CH190890A/en

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Classifications

    • 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
    • C07C45/51—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition
    • C07C45/54—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition of compounds containing doubly bound oxygen atoms, e.g. esters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Herstellung eines neuen Zwischenproduktes.    Es wurde gefunden, dass man ein neues  Zwischenprodukt - das     1-Oxy-6-metbyl-3,4-          berrzofiuorenon    der Formel  
EMI0001.0003     
    erhält, wenn man das     2-Oxynaphthalin-3-          (4'-methyl)-phenylketon    mit Kondensations  mitteln, wie     Alurniniumchlorid,    verbackt.  



  Das     1-Oxy-6-methyl-3,4-benzofluorenon     bildet ein rotes, in Wasser unlösliches Pulver,  das sich in     Ätzalkalien    mit     violettroter    Farbe  löst. Es stellt ein wichtiges Zwischenprodukt  zur Herstellung von Farbstoffen dar.  



       Beispiel:     25 Teile     2-Oxynaphthalin-3-(4'-methyl)-          phenylketon    werden mit 75 Teilen Aluminium  chlorid 2 Stunden bei 120-130'  und hierauf    1 Stunde bei 140-150 o gerührt. Die dick  flüssige Schmelze wird beim Erkalten fest.  Sie wird pulverisiert und unter Rühren all  mählich in verdünnte Salzsäure eingetragen  und einige Zeit gerührt. Das Kondensations  produkt wird     genutscht,    in verdünnter Na  tronlauge warm gelöst und von etwaigen  Verunreinigungen     abfiltriert.    Die klare Lösung  wird mit 10     o/oiger    Salzsäure angesäuert, wo  bei das neue Kondensationsprodukt ausfällt.  S. P. aus Alkohol 178  .



  Process for the production of a new intermediate product. It has been found that a new intermediate - the 1-oxy-6-metbyl-3,4-berrzofiuorenon of the formula
EMI0001.0003
    obtained when the 2-oxynaphthalene-3- (4'-methyl) phenyl ketone with condensation agents such as aluminum chloride, baked.



  The 1-oxy-6-methyl-3,4-benzofluorenone forms a red, water-insoluble powder, which dissolves in caustic alkalis with a purple-red color. It is an important intermediate in the manufacture of dyes.



       Example: 25 parts of 2-oxynaphthalene-3- (4'-methyl) - phenyl ketone are stirred with 75 parts of aluminum chloride for 2 hours at 120-130 ° and then for 1 hour at 140-150 °. The thick liquid melt solidifies when it cools. It is pulverized and gradually added to dilute hydrochloric acid while stirring and stirred for a while. The condensation product is suction filtered, dissolved warm in dilute sodium hydroxide solution and any impurities are filtered off. The clear solution is acidified with 10% hydrochloric acid, whereupon the new condensation product precipitates. S. P. from alcohol 178.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Zwischenproduktes, des l-Oxy-6-methyl-3,4- benzofluorenons der Formel EMI0001.0018 dadurch gekennzeichnet, dass das 2-Oxynaph- thaliri-3-(4'-methyl)-pheriylketori mit Konden sationsmitteln verbackt wird. Das 1-Ogy-6-methyl-3,4-benzofluorerion bildet ein rotes, in Wasser unlösliches Pulver, das sich in Ätzalkalien mit violettroter Farbe löst. Es stellt ein wichtiges Zwischenprodukt zur Herstellung von Farbstoffen dar. PATENT CLAIM: Process for the production of a new intermediate product, the l-oxy-6-methyl-3,4-benzofluorenone of the formula EMI0001.0018 characterized in that the 2-oxynaphthaliri-3- (4'-methyl) -pheriylketori is baked with condensation agents. The 1-Ogy-6-methyl-3,4-benzofluorerion forms a red, water-insoluble powder, which dissolves in caustic alkalis with a purple-red color. It is an important intermediate in the manufacture of dyes.
CH190890D 1935-11-26 1935-11-26 Process for the production of a new intermediate product. CH190890A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH190890T 1935-11-26
CH188319T 1935-11-26

Publications (1)

Publication Number Publication Date
CH190890A true CH190890A (en) 1937-03-15

Family

ID=25721627

Family Applications (1)

Application Number Title Priority Date Filing Date
CH190890D CH190890A (en) 1935-11-26 1935-11-26 Process for the production of a new intermediate product.

Country Status (1)

Country Link
CH (1) CH190890A (en)

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