CH311615A - 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
CH311615A
CH311615A CH311615DA CH311615A CH 311615 A CH311615 A CH 311615A CH 311615D A CH311615D A CH 311615DA CH 311615 A CH311615 A CH 311615A
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 CH311615A publication Critical patent/CH311615A/en

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Description

  

  Verfahren zur Herstellung eines neuen basisch substituierten Fettsäure.       (2-halogen-6-methyl-anilids).       Gegenstand des vorliegenden Patentes bil  det ein Verfahren zur Herstellung eines neuen  basisch substituierten     Pettsäure-(2-halogen-6-          methyl-a.nilids),welches    dadurch gekennzeich  net ist, dass man eine Verbindung der Formel  
EMI0001.0004     
    in welcher K einen reaktionsfähigen, während  <I>der</I> Reaktion sich abspaltenden Rest bedeutet,       mit        Pyrrolidin    umsetzt.  



  Der Rest     Y    kann in einem     Halogenatom     oder einem sonstigen für den Austausch gegen  den basiseben Rest geeigneten reaktionsfähi  gen     Substit.uenten,    wie z. B. einer     Alky1sul-          fonyloxy-    oder     Arylsulfonyloxygruppe,    beste  hen. Der Austausch der Gruppe     Y    gegen den       Pyrrolidinrest    erfolgt z.

   B. durch einfaches       Erwärmen    mit.     Pyrrolidin    gegebenenfalls in       C#egyenwart    eines basisch reagierenden Konden  sationsmittels oder von     Pv        rr        olidin    im     Über-          srhuss.    Das     N-Pyrrolidino-acet-(2-chlor-6-me-          tlryl-anilid)    ist. ein Öl, das nach einiger Zeit zu  farblosen, bei     84-85     schmelzenden Kristallen  erstarrt.

   Das Hydrochlorid der Base schmilzt  bei 172-173 , das     Succinat    bei 178-181 , das       llethansulfat    bei     146,5-1.48,5     und das     Ma.leat     bei     168-1711'.     



  Das neue     Anilid    soll als Lokalanästhetikum    und als Zwischenprodukt zur Herstellung wei  terer Derivate Verwendung finden.  



       Beispiel:     44 Gewichtsteile     Chloracet-(2-chlor-6-me-          thyl-a.nilid)    (gewonnen durch Umsetzen von       2-Chlor-6-methyl-anilin    mit     Chloracetylehlorid     in Gegenwart von     Natriumacetat,        Schmp.    140  bis 141 ) werden in 80 Gewichtsteilen Äthanol  suspendiert und mit 40 Gewichtsteilen     Pyrro-          lidin    versetzt.

   Die Temperatur steigt dabei  leicht an und ein grosser Teil des Reaktions  gemisches geht. in     Lösung.    Nun wird während  4 Stunden bei Zimmertemperatur     gerührt    und  dann einige Stunden bei Siedetemperatur.  Eine Probe mit     WTasser    und nachfolgend mit.  verdünnter Salzsäure versetzt, ergibt. wieder  Lösung des ausgefallenen Niederschlages. Mit  Wasserdampf wird hierauf der Alkohol und  das überschüssige     Pyrrolidin    abgeblasen und  nach dem Erkalten das zurückbleibende Öl in  Äther aufgenommen. Nach dem Trocknen der  ätherischen Lösung und Verjagen des Lö  sungsmittels verbleibt ein Öl, das durch  Vakuumdestillation gereinigt. wird.

   Man er  hält 43 Gewichtsteile reines     N-Pyrrolidino-          acet-(2-chlor-6-methyl-a.nilid),    was einer Aus  beute von 84 /o entspricht. Die     Umsetzung    mit       Pvrrolidin    kann auch in Benzol stattfinden.



  Process for the production of a new basic substituted fatty acid. (2-halo-6-methyl-anilide). The subject of the present patent bil det a process for the preparation of a new basic substituted fatty acid (2-halogen-6-methyl-a.nilids), which is characterized in that a compound of the formula
EMI0001.0004
    in which K means a reactive radical which is split off during <I> the </I> reaction, with pyrrolidine.



  The radical Y can be in a halogen atom or any other reactive substituents suitable for replacement with the basic radical, such as e.g. B. an alky1sulfonyloxy or arylsulfonyloxy group, best hen. The exchange of the group Y against the pyrrolidine radical takes place z.

   B. by simply heating with. Pyrrolidine, if necessary in the presence of a basic condensing agent or an excess of PVC olidine. The N-pyrrolidino-acet- (2-chloro-6-methyl-anilide) is. an oil that solidifies after some time to colorless crystals that melt at 84-85.

   The hydrochloride of the base melts at 172-173, the succinate at 178-181, the ethane sulfate at 146.5-1.48.5 and the ma.leate at 168-1711 '.



  The new anilide is to be used as a local anesthetic and as an intermediate for the production of further derivatives.



       Example: 44 parts by weight of chloroacet- (2-chloro-6-methyl-a.nilide) (obtained by reacting 2-chloro-6-methyl-aniline with chloroacetyl chloride in the presence of sodium acetate, melting point 140 to 141) are used in 80 parts by weight of ethanol are suspended and 40 parts by weight of pyrrolidine are added.

   The temperature rises slightly and a large part of the reaction mixture goes. in solution. The mixture is then stirred for 4 hours at room temperature and then for a few hours at boiling temperature. A sample with water and then with. added dilute hydrochloric acid, results. again dissolution of the precipitate. The alcohol and the excess pyrrolidine are then blown off with steam and, after cooling, the remaining oil is absorbed in ether. After the essential solution has dried and the solvent has been driven off, an oil remains that is purified by vacuum distillation. becomes.

   He holds 43 parts by weight of pure N-pyrrolidinoacet- (2-chloro-6-methyl-a.nilid), which corresponds to a yield of 84 / o. The reaction with pvrrolidine can also take place in benzene.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen basisch substituierten Fettsäure-(2-halogen-6- methyl-anilids), dadurch gekennzeichnet, dass man eine Verbindung der Formel EMI0002.0003 in welcher X einen reaktionsfähigen, während der Reaktion sich abspaltenden Rest bedeutet, mit Pyrrolidin umsetzt. Das auf diese Weise erhaltene N-Pyrrolidino-acet-(2-chlor-6-me- thyl-anilid) bildet ein Öl, das nach einiger Zeit zu farblosen, bei 84.-85 schmelzenden Kri stallen erstarrt. PATENT CLAIM: Process for the production of a new basic substituted fatty acid (2-halogen-6-methyl-anilide), characterized in that a compound of the formula EMI0002.0003 in which X is a reactive radical which is split off during the reaction, reacts with pyrrolidine. The N-pyrrolidino-acet- (2-chloro-6-methyl-anilide) obtained in this way forms an oil which solidifies after some time into colorless crystals that melt at 84-85. Das Hydrochlorid der Base schmilzt bei 172-173 , das Succinat bei 178 bis 181 , das M ethansulfai bei 146,5-148,5 und das Maleat bei 168-171 . Das neue Anilid soll als Lokalanästhetikum und als Zwischenprodukt. Vei-%vendung finden. The hydrochloride of the base melts at 172-173, the succinate at 178 to 181, the methanesulfai at 146.5-148.5 and the maleate at 168-171. The new anilide is said to be used as a local anesthetic and as an intermediate. Find use. LTNTTR ANSPRUCHI: Verfahren naell Patentanspruch, dadurch Gekennzeichnet, dass man ein Halogenacet-(2- ehlor-6-methyl-anilid) mit Pyrrolidin reagie ren lässt. LTNTTR ANSPRUCHI: Process naell patent claim, characterized in that a haloacet- (2-chloro-6-methyl-anilide) is allowed to react with pyrrolidine.
CH311615D 1952-02-25 1952-02-25 Process for the production of a new basic substituted fatty acid (2-halogen-6-methyl-anilide). CH311615A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH311615T 1952-02-25
CH307799T 1952-11-25

Publications (1)

Publication Number Publication Date
CH311615A true CH311615A (en) 1955-11-30

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CH311615D CH311615A (en) 1952-02-25 1952-02-25 Process for the production of a new basic substituted fatty acid (2-halogen-6-methyl-anilide).

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CH (1) CH311615A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10780083B1 (en) 2019-03-11 2020-09-22 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US10786485B1 (en) 2019-03-11 2020-09-29 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US10842798B1 (en) 2019-11-06 2020-11-24 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US10927096B2 (en) 2019-03-11 2021-02-23 Nocion Therapeutics, Inc. Ester substituted ion channel blockers and methods for use
US10934263B2 (en) 2019-03-11 2021-03-02 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US10933055B1 (en) 2019-11-06 2021-03-02 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US10968179B2 (en) 2019-03-11 2021-04-06 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US11332446B2 (en) 2020-03-11 2022-05-17 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11512058B2 (en) 2019-03-11 2022-11-29 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US10786485B1 (en) 2019-03-11 2020-09-29 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US10828287B2 (en) 2019-03-11 2020-11-10 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US10780083B1 (en) 2019-03-11 2020-09-22 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US10927096B2 (en) 2019-03-11 2021-02-23 Nocion Therapeutics, Inc. Ester substituted ion channel blockers and methods for use
US10934263B2 (en) 2019-03-11 2021-03-02 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US11643404B2 (en) 2019-03-11 2023-05-09 Nocion Therapeutics, Inc. Ester substituted ion channel blockers and methods for use
US10968179B2 (en) 2019-03-11 2021-04-06 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US11603355B2 (en) 2019-03-11 2023-03-14 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US11377422B2 (en) 2019-03-11 2022-07-05 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US10842798B1 (en) 2019-11-06 2020-11-24 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US10933055B1 (en) 2019-11-06 2021-03-02 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US11696912B2 (en) 2019-11-06 2023-07-11 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US11332446B2 (en) 2020-03-11 2022-05-17 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use

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