CH161740A - Process for the production of a new condensation product. - Google Patents

Process for the production of a new condensation product.

Info

Publication number
CH161740A
CH161740A CH161740DA CH161740A CH 161740 A CH161740 A CH 161740A CH 161740D A CH161740D A CH 161740DA CH 161740 A CH161740 A CH 161740A
Authority
CH
Switzerland
Prior art keywords
production
condensation product
new condensation
mol
new
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 CH161740A publication Critical patent/CH161740A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
    • C07D231/02—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
    • C07D231/10—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D231/14—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D231/18—One oxygen or sulfur atom
    • C07D231/20—One oxygen atom attached in position 3 or 5
    • C07D231/22—One oxygen atom attached in position 3 or 5 with aryl radicals attached to ring nitrogen atoms
    • C07D231/26—1-Phenyl-3-methyl-5- pyrazolones, unsubstituted or substituted on the phenyl ring

Landscapes

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

Description

  

  Verfahren zur Herstellung eines neuen Kondensationsproduktes.    Es wurde gefunden, dass man ein für die       Farbstoffindustrie    wertvolles Zwischenprodukt  erhält, wenn man 2     Mol        1-(4'-Carboxypheriyl)-          3-methyl-5-pyrazolon    mit 1     Mol        o-Tolidin     kondensiert.    Das so erhaltene Kondensationsprodukt  stellt nach dem Trocknen ein gelbliches Pul  ver dar, das sich in     Ätzalkalien    leicht löst.

    Es besitzt wahrscheinlich die Formel:  
EMI0001.0008     
    <I>Beispiel:</I>  Man beschickt ein Rührgefäss mit 200  Teilen     Xylol,    44 Teilen     1-(4'-Carboxyphenyl)-          3-methyl-5-pyrazolon    und     21,1.    Teilen     o-Toli-          din.    Man erhitzt auf zirka 120-130   und  gibt langsam, innert 2-3 Stunden, eine  Mischung von 100 Teilen     Xylol    und 13,5  Teilen     Phosphortrichlorid    zu.

   Man hält diese       \Temperatur    etwa 4 Stunden, trägt hierauf  die Reaktionsmasse in Wasser, destilliert das       gylol    mit Wasserdampf ab, löst das     Arylid     mit, verdünnter Natronlauge und fällt nach       dem        Klären    mit Kohlensäure.



  Process for the production of a new condensation product. It has been found that a valuable intermediate product for the dye industry is obtained if 2 moles of 1- (4'-carboxypheriyl) -3-methyl-5-pyrazolone are condensed with 1 mole of o-tolidine. The condensation product obtained in this way, after drying, is a yellowish powder which dissolves easily in caustic alkalis.

    It probably has the formula:
EMI0001.0008
    <I> Example: </I> A stirred vessel is charged with 200 parts of xylene, 44 parts of 1- (4'-carboxyphenyl) -3-methyl-5-pyrazolone and 21.1. Share o-tolidine. The mixture is heated to about 120-130 and slowly, within 2-3 hours, a mixture of 100 parts of xylene and 13.5 parts of phosphorus trichloride.

   This temperature is kept for about 4 hours, the reaction mass is then carried in water, the gylene is distilled off with steam, the arylide is dissolved with dilute sodium hydroxide solution and, after clarification, it is precipitated with carbonic acid.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines für die Farbstoffindustrie wertvollen Zwischenpro duktes, dadurch gekennzeichnet, dass man 2 Mol 1-(4'-Carboxyphenyl)-3-methyl-5-pyr- azolon mit 1 Mol o-Tolidin kondensiert. Das so erhaltene Kondensationsprodukt stellt nach dem Trocknen ein gelbliches Pul ver dar, das sich in Ätzalkalien leicht löst. PATENT CLAIM: A process for the production of a valuable intermediate product for the dye industry, characterized in that 2 mol of 1- (4'-carboxyphenyl) -3-methyl-5-pyrazolone are condensed with 1 mol of o-tolidine. The condensation product obtained in this way, after drying, is a yellowish powder which dissolves easily in caustic alkalis.
CH161740D 1931-11-13 1931-11-13 Process for the production of a new condensation product. CH161740A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH161740T 1931-11-13
CH159665T 1932-03-05

Publications (1)

Publication Number Publication Date
CH161740A true CH161740A (en) 1933-05-15

Family

ID=25717258

Family Applications (1)

Application Number Title Priority Date Filing Date
CH161740D CH161740A (en) 1931-11-13 1931-11-13 Process for the production of a new condensation product.

Country Status (1)

Country Link
CH (1) CH161740A (en)

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