CH233734A - Process for the preparation of an aromatic carboxamide. - Google Patents

Process for the preparation of an aromatic carboxamide.

Info

Publication number
CH233734A
CH233734A CH233734DA CH233734A CH 233734 A CH233734 A CH 233734A CH 233734D A CH233734D A CH 233734DA CH 233734 A CH233734 A CH 233734A
Authority
CH
Switzerland
Prior art keywords
sep
benzoyl
preparation
oxy
amino
Prior art date
Application number
Other languages
German (de)
Inventor
Ag Sandoz
Original Assignee
Ag Sandoz
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 Ag Sandoz filed Critical Ag Sandoz
Publication of CH233734A publication Critical patent/CH233734A/en

Links

Description

  

  Verfahren zur Darstellung eines aromatischen     Carbonsäureamids.            Das    vorliegende Patent     betrifft    ein Ver  fahren zur Darstellung von     Di-        (2'-oxy-          benzoyl)-2-a.mino-thiazol,        welches    -dadurch ge  kennzeichnet ist,     dass    man     2-A:cet:o:xy-benzoyl-          chlori.d        und        2-(2'-Oxy-benzoyl)-amino-thiazol     aufeinander einwirken lässt.  



  <I>Beispiel:</I>  4,5 g     2-(2'-Oxy-benzoyl)-amino-thiazol     werden     in.    der     berechneten    Menge n/2 Natron-    lauge     gelöst.    Unter lebhaftem Umrühren     gibt          ma.n    bei Temperaturen um 30  C 4,4 g     2-Acet-          oxy-benzoylchloarid    und 40 cm' n/2 Natron  lauge in kleinen     Portionen    zu.

   Nach einigem       Stehen    wird mit     10%iger    Salzsäure neutra  lisiert und     das    ausfallende     Reaktionsprodukt     abgetrennt.     Smp.        naeh        wiederholtem        Um-          kristatllisieren    138      (korr.);        dae    Produkt be  sitzt die Formel  
EMI0001.0033     
    Die Analyse     zeigt    folgende Werte:  
EMI0001.0035     
  
    C1;H12O,N@S <SEP> Ber. <SEP> C <SEP> 60,0; <SEP> H <SEP> 3,5; <SEP> N <SEP> 8,2 <SEP> %,
<tb>  Gef. <SEP> C <SEP> 60,1; <SEP> H <SEP> 4,0; <SEP> N <SEP> 8,3 <SEP> % <SEP> .

         Das neue     Produkt    soll als     Ausgangsetoff     für die     Herstellung    von     therapeutischen    Pro-    
EMI0002.0001     
  
    dukten <SEP> und <SEP> al,s <SEP> lianservierungsmittel <SEP> Ver  wend'ung <SEP> finden.



  Process for the preparation of an aromatic carboxamide. The present patent relates to a process for the preparation of di- (2'-oxy-benzoyl) -2-a.mino-thiazole, which is characterized in that 2-A: cet: o: xy-benzoyl- chlori.d and 2- (2'-oxy-benzoyl) -amino-thiazole can act on each other.



  <I> Example: </I> 4.5 g 2- (2'-oxy-benzoyl) -amino-thiazole are dissolved in the calculated amount of n / 2 sodium hydroxide solution. While stirring vigorously, add 4.4 g of 2-acetoxy-benzoyl chloride and 40 cm / 2 sodium hydroxide solution in small portions at temperatures around 30 ° C.

   After standing for a while, it is neutralized with 10% hydrochloric acid and the reaction product which precipitates out is separated off. After repeated recrystallization 138 (corr.); the product has the formula
EMI0001.0033
    The analysis shows the following values:
EMI0001.0035
  
    C1; H12O, N @ S <SEP> calc. <SEP> C <SEP> 60.0; <SEP> H <SEP> 3.5; <SEP> N <SEP> 8.2 <SEP>%,
<tb> Found <SEP> C <SEP> 60.1; <SEP> H <SEP> 4.0; <SEP> N <SEP> 8.3 <SEP>% <SEP>.

         The new product is intended to be used as a starting material for the manufacture of therapeutic products
EMI0002.0001
  
    Products <SEP> and <SEP> al, s <SEP> lianservants <SEP> find use <SEP>.

 

Claims (1)

EMI0002.0002 PATENTANSPRUCH: <tb> Verfahren <SEP> zur <SEP> Darstellunb <SEP> von <SEP> Di-(_'' oxy-benzoyl)-?-amino-thiazal, <SEP> dadureh <SEP> ge kennzeichnet, <SEP> dass <SEP> man <SEP> ?-Acetoxy-benzoyl chloiid <SEP> und <SEP> ?-()'-Oxy-benzoyl)-amino-thiazol <tb> aufeinander <SEP> einwirken <SEP> lässt. <tb> Das <SEP> neue <SEP> Produkt <SEP> besitzt <SEP> den <SEP> Snip. <SEP> 138' <SEP> C <tb> (korr.) <SEP> und <SEP> die <SEP> Formel EMI0002.0003 EMI0002.0004 Ci;Hi<B>;.,</B>0,N_S <SEP> Per. <SEP> C60.0; <SEP> <B>H3,5; <SEP> N8,2'</B> <SEP> , <tb> Gef. <SEP> C <SEP> 60.1; <SEP> <B>1,1</B>4,0; EMI0002.0002 PATENT CLAIM: <tb> Method <SEP> for <SEP> representation <SEP> of <SEP> Di - (_ '' oxy-benzoyl) -? - amino-thiazal, <SEP> dadureh <SEP> marked, <SEP> that <SEP> man <SEP>? -Acetoxy-benzoyl chloiid <SEP> and <SEP>? - () '- Oxy-benzoyl) -amino-thiazole <tb> allows <SEP> to act on each other. <tb> The <SEP> new <SEP> product <SEP> has <SEP> the <SEP> snip. <SEP> 138 '<SEP> C <tb> (corr.) <SEP> and <SEP> the <SEP> formula EMI0002.0003 EMI0002.0004 Ci; Hi <B>;., </B> 0, N_S <SEP> Per. <SEP> C60.0; <SEP> <B> H3.5; <SEP> N8,2 '</B> <SEP>, <tb> Found <SEP> C <SEP> 60.1; <SEP> <B> 1.1 </B> 4.0; <SEP> N <SEP> 8,3 <SEP> <B><I>%</I></B><I>.</I> EMI0002.0005 Die <SEP> @cri>indnn.g <SEP> ,soll <SEP> <B>#l1</B> <SEP> <I>n</I> <tb> <B>'#</B> <SEP> für <tb> die <SEP> Herstellung <SEP> von <SEP> therapeutischen <SEP> Produk ten <SEP> und <SEP> als <SEP> Iionservie.ruiigsmittel <SEP> Vervendung <tb> finden. <SEP> N <SEP> 8.3 <SEP> <B><I>%</I></B> <I>. </I> EMI0002.0005 The <SEP> @cri> indnn.g <SEP> should be <SEP> <B> # l1 </B> <SEP> <I> n </I> <tb> <B> '# </B> <SEP> for <tb> the <SEP> production <SEP> of <SEP> therapeutic <SEP> products <SEP> and <SEP> as <SEP> ion servicer <SEP> use <tb> find.
CH233734D 1942-04-17 1942-04-17 Process for the preparation of an aromatic carboxamide. CH233734A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH228933T 1942-04-17
CH233734T 1942-04-17

Publications (1)

Publication Number Publication Date
CH233734A true CH233734A (en) 1944-08-15

Family

ID=25727278

Family Applications (1)

Application Number Title Priority Date Filing Date
CH233734D CH233734A (en) 1942-04-17 1942-04-17 Process for the preparation of an aromatic carboxamide.

Country Status (1)

Country Link
CH (1) CH233734A (en)

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