CH224856A - Process for the preparation of an acylated arylsulfonamide. - Google Patents

Process for the preparation of an acylated arylsulfonamide.

Info

Publication number
CH224856A
CH224856A CH224856DA CH224856A CH 224856 A CH224856 A CH 224856A CH 224856D A CH224856D A CH 224856DA CH 224856 A CH224856 A CH 224856A
Authority
CH
Switzerland
Prior art keywords
arylsulfonamide
acylated
preparation
parts
salt
Prior art date
Application number
Other languages
German (de)
Inventor
A-G J R Geigy
Original Assignee
Geigy Ag J R
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 Geigy Ag J R filed Critical Geigy Ag J R
Publication of CH224856A publication Critical patent/CH224856A/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C311/00Amides of sulfonic acids, i.e. compounds having singly-bound oxygen atoms of sulfo groups replaced by nitrogen atoms, not being part of nitro or nitroso groups
    • C07C311/15Sulfonamides having sulfur atoms of sulfonamide groups bound to carbon atoms of six-membered aromatic rings

Landscapes

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

Description

  

  Verfahren zur Herstellung eines     acylierten        Arylsulfonamides.       Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines     acylier-          ten        Arylsulfonamids,    welches dadurch ge  kennzeichnet ist, dass man     3,4-Dichlorbenzol-          sulfonmethylamid    oder ein Salz desselben  mit einem     Benzoylierungsmittel    behandelt.  Die neue Verbindung ist ein farbloses Kri  stallpulver vom F. 110  . Sie dient zur Be  kämpfung von Schädlingen der Insekten  klasse und der Kleinlebewelt.  



  <I>Beispiel:</I>  60 Teile     3,4-Dichlorbenzolsulfonmethyl-          amid    werden in 180     Volumteilen    Chlorbenzol  gelöst, mit 36 Teilen     Benzoylchlorid    und       \?,5    Teilen Kupferpulver versetzt und  1     \3    Stunden am     Rückfluss    gekocht.

   Nach dem  Verjagen des Chlorbenzols mit Wasserdampf  wird der Rückstand in Äther aufgenommen,  die so erhaltene Lösung mit verdünnter Na  tronlauge und anschliessend mit Wasser     ge-          ivaschen.    Nach dem Verjagen des Äthers       hinterbleibt    das     3,4-Dichlorbenzolmethyl-          benzoylsulfonamid.    Es zeigt nach dem Um-    kristallisieren aus     Berizol-Petroläther    einen  Schmelzpunkt von<B>110'.</B>  



  Durch Zusatz von Katalysatoren oder  säurebindenden Mitteln kann bei der     Acylie-          rung    des freien Sulfonamids mit     Benzoyl-          chlorid    die Ausbeute wesentlich verbessert  werden; es können Verwendung finden:  Kupferpulver,     Zinntetrachlorid,    Aluminium  chlorid, Eisenchlorid,     Berylliumchlorid,    oder       calc.    Soda,     Calciumcarbonat,        Pyridin,        Di-          methylanilin        etc.    Anstatt des freien Sulfon  amids kann man auch zum Beispiel sein Na  triumsalz verwenden.



  Process for the preparation of an acylated arylsulfonamide. The subject of the present patent is a process for the preparation of an acylated arylsulfonamide, which is characterized in that 3,4-dichlorobenzenesulfonmethylamide or a salt thereof is treated with a benzoylating agent. The new compound is a colorless crystal powder from F. 110. It is used to control pests of the insect class and small organisms.



  <I> Example: </I> 60 parts of 3,4-dichlorobenzenesulfonmethylamide are dissolved in 180 parts by volume of chlorobenzene, 36 parts of benzoyl chloride and 5 parts of copper powder are added and the mixture is refluxed for 1 \ 3 hours.

   After the chlorobenzene has been chased off with steam, the residue is taken up in ether, and the solution thus obtained is washed with dilute sodium hydroxide solution and then with water. After the ether has been driven off, the 3,4-dichlorobenzene-methylbenzoylsulfonamide remains. After recrystallization from Berizol petroleum ether, it has a melting point of <B> 110 '. </B>



  The addition of catalysts or acid-binding agents can significantly improve the yield in the acylation of the free sulfonamide with benzoyl chloride; it can be used: copper powder, tin tetrachloride, aluminum chloride, iron chloride, beryllium chloride, or calc. Soda, calcium carbonate, pyridine, dimethylaniline, etc. Instead of the free sulfonamide, you can also use your sodium salt, for example.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines acylier- ten Arylsulfonamids, dadurch gekennzeich net, dass man 3,4-Dichlorbenzolsulfonmethyi- amid oder ein Salz desselben mit einem Benzoylierungsmittel behandelt. Die neue Verbindung ist ein farbloses Kristallpulver vom F. 110 . Sie dient zur Bekämpfung von Schädlingen der Insekten klasse und der Kleinlebewelt. PATENT CLAIM: Process for the production of an acylated arylsulfonamide, characterized in that 3,4-dichlorobenzenesulfonemethylamide or a salt thereof is treated with a benzoylating agent. The new compound is a colorless crystal powder from F. 110. It is used to control pests of the insect class and small organisms.
CH224856D 1940-02-02 1940-02-02 Process for the preparation of an acylated arylsulfonamide. CH224856A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH220746T 1940-02-02
CH224856T 1940-02-02

Publications (1)

Publication Number Publication Date
CH224856A true CH224856A (en) 1942-12-15

Family

ID=25726492

Family Applications (1)

Application Number Title Priority Date Filing Date
CH224856D CH224856A (en) 1940-02-02 1940-02-02 Process for the preparation of an acylated arylsulfonamide.

Country Status (1)

Country Link
CH (1) CH224856A (en)

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