CH187898A - Process for the production of a condensation product. - Google Patents

Process for the production of a condensation product.

Info

Publication number
CH187898A
CH187898A CH187898DA CH187898A CH 187898 A CH187898 A CH 187898A CH 187898D A CH187898D A CH 187898DA CH 187898 A CH187898 A CH 187898A
Authority
CH
Switzerland
Prior art keywords
production
condensation product
new condensation
aminodiphenyl
acetylamino
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 CH187898A publication Critical patent/CH187898A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C233/00—Carboxylic acid amides

Landscapes

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

Description

  

  Verfahren zur Herstellung eines Kondensationsproduktes.    Es wurde gefunden, dass man ein neues  Kondensationsprodukt erhält, wenn man     4-          Acetylamino    - 3     #        3'-dimethyl    - 4'-     aminodiphe-          nyl    mit     Acetessigester    kondensiert. Das neue  Kondensationsprodukt bildet ein weisses Pul  ver, ist in     Ätzalkalien    löslich und ist ein  wertvolles Zwischenprodukt zur Herstellung  von Farbstoffen.  



  <I>Beispiel:</I>  25,4 Teile von in bekannter Weise her  gestelltem     4-Acetylamino-3        #        3'-dimethyl-4'-          aminodiphenyl    werden in einem geschlossenen  Apparat mit absteigendem Kühler in 200  Teilen Chlorbenzol unter Rühren zum Sieden  erhitzt.

   In das schwach kochende Gemenge  tropft man innert etwa     1/s    Stunde 16 Teile     Acet-          essigester.    Man lässt noch etwa     1/s    Stunde  derart kochen, dass etwa 80-100 Teile  Chlorbenzol     abdestillieren.    Man lässt erkalten,         nutscht    ab, treibt das anhaftende Chlorbenzol  durch     Wasserdampf-Destillation    ab und löst  den Rückstand in kalter wässeriger alko  holischer     Natriumhydroxydlösung.    Aus dem  Filtrat erhält man durch Fällung und Trock  nen ein weisses Pulver.



  Process for the production of a condensation product. It has been found that a new condensation product is obtained when 4-acetylamino - 3 # 3'-dimethyl - 4'-aminodiphenyl is condensed with acetoacetic ester. The new condensation product forms a white powder, is soluble in caustic alkalis and is a valuable intermediate product for the production of dyes.



  <I> Example: </I> 25.4 parts of 4-acetylamino-3 # 3'-dimethyl-4'-aminodiphenyl produced in a known manner are boiled in 200 parts of chlorobenzene with stirring in a closed apparatus with a descending condenser heated.

   16 parts of acetoacetic ester are added dropwise to the slightly boiling mixture within about 1 / s hour. The mixture is left to boil for about 1 / s hour so that about 80-100 parts of chlorobenzene are distilled off. It is allowed to cool, suction filtered, the adhering chlorobenzene is driven off by steam distillation and the residue is dissolved in cold aqueous alcoholic sodium hydroxide solution. A white powder is obtained from the filtrate by precipitation and drying.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Kondensationsproduktes, dadurch gekenn zeichnet, dass man 4-Acetylamino-3 # 3'-dime- thyl-4'-aminodiphenyl mit Acetessigester kon densiert. Das neue Kondensationsprodukt bildet ein weisses Pulver, ist in Ätzalkalien löslich und ist ein wertvolles Zwischenpro dukt zur Herstellung von Farbstoffen. PATENT CLAIM: Process for the production of a new condensation product, characterized in that 4-acetylamino-3 # 3'-dimethyl-4'-aminodiphenyl is condensed with acetoacetic ester. The new condensation product forms a white powder, is soluble in caustic alkalis and is a valuable intermediate product for the production of dyes.
CH187898D 1934-07-21 1934-07-21 Process for the production of a condensation product. CH187898A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH179086T 1934-07-21
CH187898T 1934-07-21

Publications (1)

Publication Number Publication Date
CH187898A true CH187898A (en) 1936-11-30

Family

ID=25720256

Family Applications (1)

Application Number Title Priority Date Filing Date
CH187898D CH187898A (en) 1934-07-21 1934-07-21 Process for the production of a condensation product.

Country Status (1)

Country Link
CH (1) CH187898A (en)

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