CH187899A - Process for the production of a condensation product. - Google Patents

Process for the production of a condensation product.

Info

Publication number
CH187899A
CH187899A CH187899DA CH187899A CH 187899 A CH187899 A CH 187899A CH 187899D A CH187899D A CH 187899DA CH 187899 A CH187899 A CH 187899A
Authority
CH
Switzerland
Prior art keywords
production
condensation product
new condensation
dichloro
parts
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 CH187899A publication Critical patent/CH187899A/en

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Classifications

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

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  • 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'-dichlor-4-aminodiphenyl     mit     Acetessigester    kondensiert. Das neue  Kondensationsprodukt bildet ein weisses  Pulver, ist in     Ätzalkalien    löslich und ist ein  wertvolles Zwischenprodukt zur Herstellung  von Farbstoffen.  



  <I>Beispiel:</I>  29,5 Teile von in bekannter Weise her  gestelltem     4-Acetylatnino-3.3'-dichlor-4'-          arninodipltertyl    werden in einem geschlossenen  Apparat mit absteigendem Kühler in 200 Tei  len     Chlorbenzol    unter Rühren zum Sieden  erhitzt.

   In das schwach kochende Gemenge  tropft man innert etwa     '/s    Stunde 16 Teile       Acetessigester.    Man lässt noch etwa     1/z    Stunde  derart kochen, dass etwa 80 bis 100 Teile  Chlorbenzol     abdestillieren.    Man lässt erkalten,         nutscht    ab, treibt das anhaftende Chlorbenzol  durch     Wasserdampf-Destillation    ab und löst  den Rückstand in kalter, wässeriger alkoho  lischer     Natriumhydrogydlösung.    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 if 4-acetylamino-3. 3'-dichloro-4-aminodiphenyl 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> 29.5 parts of 4-acetylatnino-3,3'-dichloro-4'-arninodipltertyl produced in a known manner are heated to boiling in a closed apparatus with a descending condenser in 200 parts of chlorobenzene with stirring .

   16 parts of acetoacetic ester are added dropwise to the slightly boiling mixture within about 1/2 hour. The mixture is left to boil for a further half an hour such that about 80 to 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 hydrogen 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'-dichlor- 4'-aminodiphenyl mit Acetessigester konden siert. Das neue Kondensationsprodukt bildet ein weisses Pulver, ist in Ätzalkalien löslich und ist ein wertvolles Zwischenprodukt zur Herstellung von Farbstoffen. PATENT CLAIM: Process for the production of a new condensation product, characterized in that 4-acetylamino-3. 3'-dichloro-4'-aminodiphenyl 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.
CH187899D 1934-07-21 1934-07-21 Process for the production of a condensation product. CH187899A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH187899T 1934-07-21
CH179086T 1934-07-21

Publications (1)

Publication Number Publication Date
CH187899A true CH187899A (en) 1936-11-30

Family

ID=25720257

Family Applications (1)

Application Number Title Priority Date Filing Date
CH187899D CH187899A (en) 1934-07-21 1934-07-21 Process for the production of a condensation product.

Country Status (1)

Country Link
CH (1) CH187899A (en)

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