CH93576A - Process for the production of phenylglycine. - Google Patents

Process for the production of phenylglycine.

Info

Publication number
CH93576A
CH93576A CH93576DA CH93576A CH 93576 A CH93576 A CH 93576A CH 93576D A CH93576D A CH 93576DA CH 93576 A CH93576 A CH 93576A
Authority
CH
Switzerland
Prior art keywords
sep
production
phenylglycine
salt
aniline
Prior art date
Application number
Other languages
German (de)
Inventor
Limited British Dy Corporation
Original Assignee
British Dyestuffs Corp Limited
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 British Dyestuffs Corp Limited filed Critical British Dyestuffs Corp Limited
Publication of CH93576A publication Critical patent/CH93576A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Herstellung von     Plienylglyciu.       Vorliegende     Erfindung        betrifft    ein neues  Verfahren zur Herstellung von     Phenylglycin     durch Verwendung von     Trichloräthylen    und  Anilin in einem einzigen     technischen    Vorgang,  indem man diese beiden in Wasser suspen  dierten     Körper    mit einer alkalisch wirkenden       Substanz,    z.

   B.     1@alkmilcb,        unter    Druck und  bei einer     Temperatur        von        ungefähr        1-10   <B>bis-</B>  <B>1900</B> C erhitzt,     bis        daU)    die ganze verwendete  Menge in     Phen3-lglycinaalz    umgewandelt ist.  



  Dieses     Herstellungsverfahren    kann ohne  Verwendung von     Alkohol    als Lösungsmittel  und     ohneAbsönderung    der einzelnen Zwischen  produkte     ausgeführt        werden.       <I>Beispiel</I>  Man erhitzt in einem     finit        Rührer        ver-          sehenen        Autoklav    en  
EMI0001.0028     
  
    132 <SEP> Gewichtsteile <SEP> Triclilor < itlivlen
<tb>  100 <SEP> Kalk
<tb>  800 <SEP> ..

   <SEP> Wasser
<tb>  280 <SEP> Anilin            lütt    die Temperatur bis zu     ungefähr    180"C  steigen, und     lä1>t    das Gemisch bei dieser       Temperatur    unter stetem     Rühren    während       2-1        Stunden        stelieii.    Der     I;bersehuss    von Anilin  wird     abdestilliert.    Der Rückstand besteht aus  einem     Gemisch    von     Calciunisalz    des     Phenyl-          glycins,    einer     Li;

  sung    von     C'alciunicliloi-id    und       unverändertem    Kalk.     -Man    filtriert nach dein       Erkalten.    Die kleine     -Menge    des     Calciiun-          salzes    des     Plienylgl3-cins,    welche in der Mut  terlauge bleibt, kann<B>als,</B> Eisensalz     ausgefällt     werden. Der feste auf     dein    Filter zurück  bleibende Rest wird mit kohlensaurem oder       kaustiscbein    Alkali gekocht, uni das Alkali  salz des     Plienylgycins    in Lösung zu erhalten.

    Diese     Lesung    wird endlich bis zur Trockne  eingedampft.



  Process for the preparation of Plienylglyciu. The present invention relates to a new process for the production of phenylglycine by using trichlorethylene and aniline in a single technical process by these two suspended bodies in water with an alkaline substance, e.g.

   B. 1 @ alkmilcb, heated under pressure and at a temperature of about 1-10 <B> to </B> <B> 1900 </B> C until the whole amount used is converted into phen3-glycine salt .



  This manufacturing process can be carried out without the use of alcohol as a solvent and without the individual intermediate products being separated off. <I> Example </I> The autoclave is heated in a finite stirrer
EMI0001.0028
  
    132 <SEP> parts by weight <SEP> Triclilor <itlivlen
<tb> 100 <SEP> lime
<tb> 800 <SEP> ..

   <SEP> water
<tb> 280 <SEP> aniline causes the temperature to rise to approximately 180 ° C., and the mixture is left at this temperature with constant stirring for 2-1 hours. The excess aniline is distilled off. The residue persists from a mixture of calcium salt of phenylglycine, a Li;

  Solution of C'alciunicliloi-id and unchanged lime. - You filter after you have cooled down. The small amount of the calcium salt of Plienylgl3-cin which remains in the mother liquor can be precipitated as an iron salt. The solid residue remaining on the filter is boiled with carbonate or caustic alkali in order to keep the alkali salt of plienylgycine in solution.

    This reading is finally evaporated to dryness.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Plienyl- glycin aus Trichloräthylen und Anilin in einem einzigen technischen Vorgang, dadurch EMI0002.0001 gekennzeichnet, <SEP> dah <SEP> rnan <SEP> diese <SEP> Iit;rper <SEP> in <tb> WassE@r <SEP> suspendiert <SEP> und <SEP> in <SEP> (4egenwart <SEP> einer <tb> alkalischen <SEP> Substanz, <SEP> unter <SEP> Druck <SEP> und <SEP> bei <tb> einer <SEP> Temperatur <SEP> von <SEP> 140-1900 <SEP> C <SEP> bis <SEP> zur EMI0002.0002 vollstündigen <SEP> Umwandlung <SEP> in <SEP> @hen@-l@l@@cin salz <SEP> erhitzt. PATENT CLAIM: Process for the production of plienylglycine from trichlorethylene and aniline in a single technical process, thereby EMI0002.0001 marked, <SEP> then <SEP> rnan <SEP> this <SEP> Iit; rper <SEP> in <tb> WassE @ r <SEP> suspends <SEP> and <SEP> in <SEP> (4present <SEP> one <tb> alkaline <SEP> substance, <SEP> under <SEP> pressure <SEP> and <SEP> at <tb> a <SEP> temperature <SEP> from <SEP> 140-1900 <SEP> C <SEP> to <SEP> for EMI0002.0002 complete <SEP> conversion <SEP> into <SEP> @ hen @ -l @ l @@ cin salt <SEP> heated.
CH93576D 1920-11-16 1920-11-16 Process for the production of phenylglycine. CH93576A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH93576T 1920-11-16

Publications (1)

Publication Number Publication Date
CH93576A true CH93576A (en) 1922-03-16

Family

ID=4351125

Family Applications (1)

Application Number Title Priority Date Filing Date
CH93576D CH93576A (en) 1920-11-16 1920-11-16 Process for the production of phenylglycine.

Country Status (1)

Country Link
CH (1) CH93576A (en)

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