CH311625A - Process for the production of a new basic substituted fatty acid (2-halogen-6-methyl-anilide). - Google Patents

Process for the production of a new basic substituted fatty acid (2-halogen-6-methyl-anilide).

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Publication number
CH311625A
CH311625A CH311625DA CH311625A CH 311625 A CH311625 A CH 311625A CH 311625D A CH311625D A CH 311625DA CH 311625 A CH311625 A CH 311625A
Authority
CH
Switzerland
Prior art keywords
anilide
methyl
halogen
fatty acid
production
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft Cilag
Original Assignee
Cilag Ag
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 Cilag Ag filed Critical Cilag Ag
Publication of CH311625A publication Critical patent/CH311625A/en

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Description

  

  verfahren     zur    Herstellung eines neuen basisch substituierten     Fettsäure-          (2-halogen-f        -methyl-anilids).            Gegenstand    des vorliegenden Patentes bil  det ein Verfahren zur     Herstellung    eines neuen       basisch    substituierten     Fettsäiire-(2-halogen-6-          meth@#1-anilids),    welches dadurch gekennzeich  net ist, dass man eine Verbindung der Formel  
EMI0001.0010     
    in welcher X einen reaktionsfähigen, während  der Reaktion sich abspaltenden Rest. bedeutet,  mit     Pyrrolidin    umsetzt.  



  Der Rest X kann in einem Halogenatom  oder einem sonstigen für den     Austausch    gegen  den basischen Rest geeigneten reaktionsfähi  gen     Substituenten,    wie z. B. einer     Alky1sul-          fonyloxy-    oder     Arylsulfonyloxygi-LLippe,    beste  hen. Der Austausch der Gruppe X gegen den       Pyrrolidinrest    erfolgt z. B. durch einfaches  Erwärmen mit     Pyrrolidin    gegebenenfalls in       Gegenwart    eines basisch reagierenden Konden  sationsmittels oder von     Pyrrolidin    im Über  schoss.

   Das     ss-Pyrrolidino-propionsäure-        (2-          chlor-6-methyl-anilid)        isst    ein Öl, das- nach  einiger Zeit zu farblosen, bei 80  schmelzenden  Kristallen erstarrt. Das Hydrochlorid der Base  schmilzt bei 156-157 .  



  Das neue     Anilid    soll als Lokalanästhetikum  und als     Zwischenprodukt    zur Herstellung wei  terer Derivate Verwendung finden.    <I>Beispiel:</I>  31     Gewichtsteile        P-Chlor-propionsäure-(2-          chlor-6-methyl-anilid)    (gewonnen durch Um  setzen von     2-Chlor-6-methyl-anilin    mit     ss-Chlor-          propionyl-chlorid    in Gegenwart von Natrium  acetat,     Schmp.    109-112 )

   werden in 80 Ge  wichtsteilen Äthanol suspendiert und mit 30  Gewichtsteilen     Pyrrolidin        versetzt.    Die Tem  peratur     steigt    dabei leicht an und     ein    grosser  Teil des     Reaktionsgemisches    geht in     Lösung.          NTun    wird während 4 Stunden bei Zimmer  temperatur gerührt und dann einige     Stunden     bei Siedetemperatur. Man versetzt mit Wasser  und nimmt, das sich abscheidende Öl in Äther  auf.

   Nach dem Trocknen der     ätherischen    Lö  sung und Verjagen des Lösungsmittels ver  bleibt ein Öl, das durch Überführen in das       Hydrochlorid        gereinigt    wird. Man erhält 35  Gewichtsteile reines     ss-P,vrTolidino-propion-          säure-(2-ehlor-6-methyl-anilid).    Die Umset  zung mit.     Py        rrolidin    kann     aueh    in Benzol  stattfinden.



  process for the production of a new basic substituted fatty acid (2-halogen-f-methyl anilide). The subject of the present patent bil det a process for the preparation of a new basic substituted Fettsäiire- (2-halogen-6-meth @ # 1-anilide), which is characterized in that a compound of the formula
EMI0001.0010
    in which X is a reactive radical which is split off during the reaction. Reacts with pyrrolidine.



  The radical X can be in a halogen atom or other suitable reactive substituents for replacement with the basic radical, such as. B. an Alky1sulfonyloxy- or Arylsulfonyloxygi-LLippe, best hen. The exchange of the group X against the pyrrolidine radical takes place, for. B. by simply heating with pyrrolidine, optionally in the presence of a basic condensation agent or pyrrolidine in the over shot.

   The ss-pyrrolidino-propionic acid- (2-chloro-6-methyl-anilide) eats an oil that solidifies after some time to colorless crystals that melt at 80. The base hydrochloride melts at 156-157.



  The new anilide is to be used as a local anesthetic and as an intermediate for the production of further derivatives. <I> Example: </I> 31 parts by weight of P-chloro-propionic acid (2-chloro-6-methyl-anilide) (obtained by reacting 2-chloro-6-methyl-aniline with ss-chloropropionyl chloride in the presence of sodium acetate, m.p. 109-112)

   are suspended in 80 parts by weight of ethanol and treated with 30 parts by weight of pyrrolidine. The temperature rises slightly and a large part of the reaction mixture goes into solution. NTun is stirred for 4 hours at room temperature and then for a few hours at boiling temperature. Water is added and the oil which separates out is taken up in ether.

   After the ethereal solution has dried and the solvent has been driven off, an oil remains that is purified by converting it into the hydrochloride. 35 parts by weight of pure SS-P, vrTolidino-propionic acid (2-chloro-6-methyl-anilide) are obtained. Implementation with. Pyrrolidine can also take place in benzene.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen basisch substituierten Fettsäure-(2-halogen-6- methyl-a.nilids), dadurch gekennzeichnet, dass man eine Verbindung der Formel EMI0001.0053 in welcher X einen reaktionsfähigen, während der Reaktion sieh abspaltenden Rest, bedeutet, mit Pvrrolidin umsetzt. Das auf diese Weise erhaltene ss-Pyrrolidino-propionsäure-(2-ehlor- 6-methyl-anilid) bildet, ein Öl, das nach einiger Zeit zu farblosen, bei ä0 schmelzenden Kri stallen erstarrt.. PATENT CLAIM: Process for the preparation of a new basic substituted fatty acid (2-halogen-6-methyl-a.nilids), characterized in that a compound of the formula EMI0001.0053 in which X is a reactive radical which is split off during the reaction, is reacted with pvrrolidine. The ss-pyrrolidino-propionic acid- (2-chloro-6-methyl-anilide) obtained in this way forms an oil which solidifies after some time to colorless crystals that melt at 0. Das Hydrochlorid der Base schmilzt bei 156-157 . Das neue Anilid soll als Lokalanästhetikum und als Zwisehenprodukt Verwendung finden. <B>UNTERANSPRUCH:</B> Verfahren nach Patentansprueh, dadureh gekennzeichnet, da.ss man ein ss-Halogen-pro- pionsäure-(2-chlor-6-methvl-anilid) mit Pvrro- lidin reagieren lässt. The base hydrochloride melts at 156-157. The new anilide is to be used as a local anesthetic and as an intermediate product. <B> SUBClaim: </B> Process according to patent claim, characterized by the fact that an β-halopropionic acid (2-chloro-6-methanol anilide) is allowed to react with pvrrolidine.
CH311625D 1952-02-25 1952-02-25 Process for the production of a new basic substituted fatty acid (2-halogen-6-methyl-anilide). CH311625A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH311625T 1952-02-25
CH307799T 1952-11-25

Publications (1)

Publication Number Publication Date
CH311625A true CH311625A (en) 1955-11-30

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ID=25735358

Family Applications (1)

Application Number Title Priority Date Filing Date
CH311625D CH311625A (en) 1952-02-25 1952-02-25 Process for the production of a new basic substituted fatty acid (2-halogen-6-methyl-anilide).

Country Status (1)

Country Link
CH (1) CH311625A (en)

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