CH141750A - Process for replacing the amino group with halogens in aliphatic and aromatic compounds. - Google Patents

Process for replacing the amino group with halogens in aliphatic and aromatic compounds.

Info

Publication number
CH141750A
CH141750A CH141750DA CH141750A CH 141750 A CH141750 A CH 141750A CH 141750D A CH141750D A CH 141750DA CH 141750 A CH141750 A CH 141750A
Authority
CH
Switzerland
Prior art keywords
sep
aliphatic
amino group
halogens
replacing
Prior art date
Application number
Other languages
German (de)
Inventor
Richard Prof Dr Kuhn
Eichenberger Ernst Dipl Re Nat
Original Assignee
Richard Prof Dr Kuhn
Eichenberger Ernst Dipl Rer Na
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 Richard Prof Dr Kuhn, Eichenberger Ernst Dipl Rer Na filed Critical Richard Prof Dr Kuhn
Publication of CH141750A publication Critical patent/CH141750A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00Preparation of halogenated hydrocarbons
    • C07C17/093Preparation of halogenated hydrocarbons by replacement by halogens

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

Description

  

  Verfahren zum Ersatz der     Aminogruppe    durch Halogene in     aliphatischen    und  aromatischen Verbindungen.    Im     Hauptpatent    Nr. 136906 ist ein Ar  beitsverfahren zum Ersatz der     Aminogruppe     durch     Hülagene    in     aliphatisahen        undl        a.roma-          tischen    Verbindungen beschrieben worden,  bei     walühem    man     ,das        Amin.,d:

  urch    Einwirken  lassen von salpetriger Säure in das     Diazo-          niumhalogenid    überführt und     laus    :dem letz  teren Produkt die     Stickstoffatome    ,der     Diazo-          gruppe    zur     Abspaltung    bringt,     welches    da  durch     gekennzeichnet    ist,     @dass    man :

  auf 1       Mol.    des betreffenden     Amins    .in     Gegenwart     einer     2?#,        Mol.    nicht wesentlich     Übersteigen-          @den        Menge    Mineralsäure 1     Mol.    Nitrit ein  wirken     lässt    und aus der gebildeten     Diazo-          verbin!üung    die Stickstoffatome der     Diazo-          gr        uppe    in     Gegenwart    von sehr     konzentrierten       <RTI  

   ID="0001.0040">   Halogenidlösungen    ohne     Znsatz    weiterer  Säuremengen :zur     Abspaltung        bringt.     



  In weiterer Ausbildung dieses Verfahrens  wurde nun     :gefunden,        @dass    man zu dem     glei-          ehen        Ergebnis    gelangt,     wenn,    man     die    Zer  setzung der     Einwirkungsproidukte    vorn sal:pe-  
EMI0001.0052     
  
    triger <SEP> :Säure <SEP> auf <SEP> Aminoverbindungen <SEP> :durch
<tb>  Bestrahlung <SEP> vornimmt.
<tb>  



  <I>Beispiel:</I>
<tb>  50 <SEP> gr <SEP> o-To:luidin, <SEP> 110 <SEP> cm" <SEP> konzentrierte
<tb>  !Salzsäure <SEP> und <SEP> 120 <SEP> cm' <SEP> Wasser <SEP> werden <SEP> bei
<tb>  zirka <SEP> <B>1,0'</B> <SEP> mit <SEP> einer <SEP> Lösung <SEP> von <SEP> 32,5 <SEP> gr <SEP> NTa  triumnitrit <SEP> in <SEP> 80 <SEP> cm' <SEP> '\Va.s:ser,diazotiert. <SEP> Die
<tb>  erhaltene <SEP> klare <SEP> Diazoniumdösung <SEP> wind <SEP> in
<tb>  der <SEP> Kälte <SEP> (bei <SEP> zirka <SEP> 0 <SEP>  ) <SEP> mit <SEP> einem <SEP> Brei <SEP> von
<tb>  300 <SEP> ,gr <SEP> ,Zinkchlorid <SEP> -und <SEP> 75 <SEP> b <SEP> Ammonchlorid
<tb>  und <SEP> 120 <SEP> em3 <SEP> Wasser <SEP> angerührt. <SEP> Die <SEP> erhal  tene <SEP> klare <SEP> Lösung <SEP> wird <SEP> nun <SEP> in <SEP> einem <SEP> ge  schilossenen <SEP> oder <SEP> mit <SEP> Rückflusskü:

  hler <SEP> ver  sehenen <SEP> Gefäss <SEP> der <SEP> Quecksilbertauchlampe
<tb>  ausgesetzt. <SEP> Bei <SEP> zirka <SEP> 5 <SEP>   <SEP> beginnt. <SEP> die <SEP> Stiek  stoffentwicklung. <SEP> Bei <SEP> 15 <SEP>   <SEP> wind <SEP> sie, <SEP> ziemlich
<tb>  lebhaft. <SEP> Man <SEP> kann <SEP> entweider <SEP> bei <SEP> 5 <SEP>   <SEP> zirka <SEP> 50
<tb>  Stunden <SEP> .belichten <SEP> oder <SEP> aber <SEP> bei <SEP> 15 <SEP>   <SEP> zirka
<tb>  10 <SEP> Stunden <SEP> um <SEP> al!lee <SEP> Dia!zoniumsaalz <SEP> au <SEP> sl.al  ten.

   <SEP> Es <SEP> zeigt <SEP> sich <SEP> nun, <SEP> dass <SEP> die <SEP> Reaktion
<tb>  genau <SEP> gleieh <SEP> verläuft, <SEP> wie <SEP> wenn <SEP> sie <SEP> in <SEP> der         Hitze ohne     Belichtung    durchgeführt     wird.     Die Ausbeute an     Chlortoluol    ist vorzüglich.  Ähnlich verfährt man     mit,den        andern.    in     Jem          I3auptpatent    erwähnten     Verbindungen.  



  Process for replacing the amino group with halogens in aliphatic and aromatic compounds. In the main patent No. 136906 a working process for the replacement of the amino group by Hülagene in aliphatic and a.romatic compounds has been described, in walühem one, the amine.

  By allowing nitrous acid to act, it is converted into the diazonium halide and lauss: the latter product causes the nitrogen atoms, the diazo group to be split off, which is characterized by @that one:

  to 1 mole of the amine in question, in the presence of a 2 mole, mole not significantly exceeding the amount of mineral acid, 1 mole of nitrite can act and the nitrogen atoms of the diazo group from the diazo compound formed are present of very concentrated <RTI

   ID = "0001.0040"> Halide solutions without adding further amounts of acid: causes splitting.



  In a further development of this process it has now been found that one arrives at the same result if one observes the decomposition of the action products in front of the sal: pe-
EMI0001.0052
  
    triger <SEP>: acid <SEP> on <SEP> amino compounds <SEP>: through
<tb> performs irradiation <SEP>.
<tb>



  <I> Example: </I>
<tb> 50 <SEP> gr <SEP> o-To: luidine, <SEP> 110 <SEP> cm "<SEP> concentrated
<tb>! Hydrochloric acid <SEP> and <SEP> 120 <SEP> cm '<SEP> water <SEP> are <SEP> at
<tb> about <SEP> <B> 1.0 '</B> <SEP> with <SEP> a <SEP> solution <SEP> of <SEP> 32.5 <SEP> gr <SEP> NTa trium nitrite < SEP> in <SEP> 80 <SEP> cm '<SEP>' \ Va.s: ser, diazotized. <SEP> The
<tb> received <SEP> clear <SEP> diazonium solution <SEP> wind <SEP> in
<tb> the <SEP> cold <SEP> (with <SEP> about <SEP> 0 <SEP>) <SEP> with <SEP> a <SEP> porridge <SEP> of
<tb> 300 <SEP>, gr <SEP>, zinc chloride <SEP> and <SEP> 75 <SEP> b <SEP> ammonium chloride
<tb> and <SEP> 120 <SEP> em3 <SEP> water <SEP> mixed. <SEP> The <SEP> received <SEP> clear <SEP> solution <SEP> becomes <SEP> now <SEP> in <SEP> a <SEP> closed <SEP> or <SEP> with <SEP> reflux cooling :

  The <SEP> provide the <SEP> vessel <SEP> of the <SEP> mercury immersion lamp
<tb> exposed. <SEP> At <SEP> approx. <SEP> 5 <SEP> <SEP> begins. <SEP> the <SEP> substance development. <SEP> At <SEP> 15 <SEP> <SEP> <SEP> winds up, <SEP> pretty much
<tb> lively. <SEP> You can <SEP> either <SEP> with <SEP> 5 <SEP> <SEP> about <SEP> 50
<tb> hours <SEP> .exposure <SEP> or <SEP> but <SEP> at <SEP> 15 <SEP> <SEP> approx
<tb> 10 <SEP> hours <SEP> at <SEP> al! lee <SEP> Dia! zoniumsaalz <SEP> out of <SEP> sl.

   <SEP> It <SEP> shows <SEP> <SEP> now, <SEP> that <SEP> the <SEP> reaction
<tb> exactly <SEP> same as <SEP>, <SEP> like <SEP> if <SEP> you <SEP> in <SEP> the heat without exposure. The yield of chlorotoluene is excellent. One proceeds similarly with the others. compounds mentioned in the main patent.

 

Claims (1)

<B>PATENTANSPRUCH:</B> Verfahren, um die Amin boruppe in Ami nen durch Halogen nach dem Verfahren des Hauptpatentes Nr.136906 zu substituieren, EMI0002.0012 fdia,dure,h <SEP> gekennzeichnet, <SEP> @duss <SEP> idie <SEP> Zersetzung <tb> der <SEP> Einwirk <SEP> ungsprodukte <SEP> der <SEP> s:al:petriben <tb> ,Säure <SEP> auf <SEP> aromatische <SEP> Amine <SEP> in <SEP> Gegenwart <tb> von <SEP> Lösungen <SEP> von <SEP> hohen <SEP> Halogenionen konzentrationen <SEP> idureh <SEP> Bestra-hlung <SEP> vor genommen <SEP> wird. <B> PATENT CLAIM: </B> Process to substitute the amine boron group in amines by halogen according to the process of main patent number 136906, EMI0002.0012 fdia, dure, h <SEP> marked, <SEP> @duss <SEP> iie <SEP> decomposition <tb> the <SEP> action <SEP> ungsprodukte <SEP> the <SEP> s: al: petriben <tb>, acid <SEP> on <SEP> aromatic <SEP> amines <SEP> in <SEP> presence <tb> of <SEP> solutions <SEP> of <SEP> high <SEP> halogen ion concentrations <SEP> if <SEP> irradiation <SEP> is carried out <SEP>.
CH141750D 1928-10-30 1928-10-30 Process for replacing the amino group with halogens in aliphatic and aromatic compounds. CH141750A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH141750T 1928-10-30
CH136906T 1928-10-30

Publications (1)

Publication Number Publication Date
CH141750A true CH141750A (en) 1930-08-15

Family

ID=25712836

Family Applications (1)

Application Number Title Priority Date Filing Date
CH141750D CH141750A (en) 1928-10-30 1928-10-30 Process for replacing the amino group with halogens in aliphatic and aromatic compounds.

Country Status (1)

Country Link
CH (1) CH141750A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997041083A1 (en) * 1996-05-01 1997-11-06 Rhodia Limited Process for the preparation of fluoro compounds from the corresponding amines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997041083A1 (en) * 1996-05-01 1997-11-06 Rhodia Limited Process for the preparation of fluoro compounds from the corresponding amines
US6179970B1 (en) 1996-05-01 2001-01-30 Rhodia Limited Process for the preparation of fluoro compounds from the corresponding amines

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