CH311589A - Process for making a new salt. - Google Patents

Process for making a new salt.

Info

Publication number
CH311589A
CH311589A CH311589DA CH311589A CH 311589 A CH311589 A CH 311589A CH 311589D A CH311589D A CH 311589DA CH 311589 A CH311589 A CH 311589A
Authority
CH
Switzerland
Prior art keywords
acid
chloro
anilide
methyl
new salt
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 CH311589A publication Critical patent/CH311589A/en

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Description

  

  Verfahren zur Herstellung eines neuen Salzes.         Gegenstand    des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines neuen  Salzes, welches dadurch gekennzeichnet ist,       class    man     N-Pyrrolidinoessigsäui-e-(2-chlor-6-          methyl-ajiilid)    mit     Dioxymaleinsäure    zur Re  aktion bringt. Man kann die Umsetzung in  einem Lösungsmittel, wie z. B. Alkohol, Äther,  Benzol,     Dioxan,    Wasser,     -@V        asser-Alkoholg@emi-          schen,    vornehmen.  



       31an    kann zur     Ausführung    des     erfindungs-          gemässen    Verfahrens auch so vorgehen, dass  n     nan    ein solches Salz des     N-Pyrrolidinoessig-           < iitire-(2-chlor-6-methyl-anilides)    mit einem  solchen Salz der     Dioxymaleinsäure    zusammen  bringt, aus welchen sich durch Umsetzung in  termediär das freie     N-Pyrrolidinoessigsäure-          (        2-chlor-6-meth@l-anilid    ) und die freie     Dioxy-          inaleinsäure    bilden.

   Das     Reaktionsprodukt    be  steht in diesem Falle aus zwei Salzen; je nach       der    Löslichkeit und     Kristallisationstendenz          derselben    tritt das     N-Pyrrolidinoessigsäure-(2-          ehlor    - 6     -methyl-anilid)    -     hydrogen-dioxymaleat     als erstes oder als zweites     Kristallisat    auf.  



  Das so erhaltene     N-P.)-rrolidinoessigsäure-          (2    - chlor - 6     -methyl    -     anilid)    -     hydrogen    -     dioxy-          maleat    bildet     farblQse    Kristalle, die bei 114    bis 115  schmelzen. Das neue Salz soll     als     Lokalanästhetikum verwendet werden.

           Beispiel:       5 g     N-Pyrrolidinoessigsäure-(2-chlor-6-me-          thyl-anilid)    in 50     ein-    Äther werden mit einer  Lösung von 2,93 g     Dioxymaleinsäure    in 50     cm3     Äther versetzt. Auf Zusatz von Aceton tritt  Kristallisation ein.

   Nach einiger Zeit werden  die gebildeten Kristalle abgesaugt, mit Äther  gewaschen und dann getrocknet. -Man erhält  7,7 g des bei     114--115     schmelzenden     N-Pyrro-          lid        inoessigsäure-        (2-ehlor    - 6 -     methyl-anilid)        -hy-          drogen-dioxymaleates.  



  Process for making a new salt. The subject of the present patent is a process for the preparation of a new salt, which is characterized in that N-pyrrolidinoacetic acid-e- (2-chloro-6-methyl-ajiilide) reacts with dioxymaleic acid. You can do the reaction in a solvent, such as. B. Alcohol, ether, benzene, dioxane, water, - @ water-alcohol g @ emic.



       31an can also proceed to carry out the method according to the invention in such a way that n nan brings such a salt of N-pyrrolidinoacetic acid (2-chloro-6-methyl-anilide) together with such a salt of dioxymaleic acid, from which form the free N-pyrrolidinoacetic acid- (2-chloro-6-meth @ l-anilide) and the free dioxy- inaleic acid by conversion in termediär.

   In this case, the reaction product consists of two salts; Depending on the solubility and crystallization tendency of the same, the N-pyrrolidinoacetic acid (2-chloro-6-methyl-anilide) -hydrogen dioxymaleate occurs as the first or second crystallizate.



  The N-P.) - rrolidinoacetic acid (2 - chloro - 6 - methyl - anilide) - hydrogen - dioxymaleate thus obtained forms colorless crystals which melt at 114 to 115. The new salt is intended to be used as a local anesthetic.

           Example: 5 g of N-pyrrolidinoacetic acid (2-chloro-6-methyl-anilide) in 50 one-ether are mixed with a solution of 2.93 g of dioxymaleic acid in 50 cm3 of ether. Crystallization occurs on addition of acetone.

   After some time, the crystals formed are filtered off with suction, washed with ether and then dried. 7.7 g of N-pyrrolid inoacetic acid (2-chloro-6-methyl-anilide) -hydrogen-dioxymaleate, which melts at 114-115, are obtained.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Salzes, dadurch gekennzeichnet, dass man N- Pyri-olidinoessigsäure-(2-chlor-6-methyl-anilid) mit Dioxymaleinsäure zur Reaktion bringt. Das resultierende N-Pyrrolidinoessigsäure- (2-chlor-6-methyl - anilid) - hydrogen-dioxy- maleat bildet farblose, bei 11r--115 schmel zende Kristalle; es soll als Lokalanästhetikum verwendet werden. PATENT CLAIM: Process for the production of a new salt, characterized in that N-pyri-olidinoacetic acid (2-chloro-6-methyl-anilide) is reacted with dioxymaleic acid. The resulting N-pyrrolidinoacetic acid (2-chloro-6-methyl-anilide) -hydrogen-dioxymaleate forms colorless crystals melting at 11r - 115; it is intended to be used as a local anesthetic.
CH311589D 1952-02-25 1952-02-25 Process for making a new salt. CH311589A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH311589T 1952-02-25
CH306793T 1955-04-30

Publications (1)

Publication Number Publication Date
CH311589A true CH311589A (en) 1955-11-30

Family

ID=25735207

Family Applications (1)

Application Number Title Priority Date Filing Date
CH311589D CH311589A (en) 1952-02-25 1952-02-25 Process for making a new salt.

Country Status (1)

Country Link
CH (1) CH311589A (en)

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