CH179697A - Process for the preparation of 1-tropic acid-2,2-dimethyl-3-dimethylaminopropanol ester. - Google Patents

Process for the preparation of 1-tropic acid-2,2-dimethyl-3-dimethylaminopropanol ester.

Info

Publication number
CH179697A
CH179697A CH179697DA CH179697A CH 179697 A CH179697 A CH 179697A CH 179697D A CH179697D A CH 179697DA CH 179697 A CH179697 A CH 179697A
Authority
CH
Switzerland
Prior art keywords
dimethyl
tropic acid
ester
dimethylaminopropanol
preparation
Prior art date
Application number
Other languages
German (de)
Inventor
F Hoffmann- Aktiengesellschaft
Original Assignee
Hoffmann La Roche
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
Priority claimed from DEH136773D external-priority patent/DE594085C/en
Application filed by Hoffmann La Roche filed Critical Hoffmann La Roche
Publication of CH179697A publication Critical patent/CH179697A/en

Links

Description

  

  Verfahren zur Darstellung von     1-Tropasäure-2,2-dimethyl-3-dimethylamino-          propanolester.       Die Ester von     Aminoalkoholen    der all  gemeinen Formel  
EMI0001.0004     
    wobei R ein     Alkyl    und R.' ein     Alkyl    oder  Wasserstoff bedeutet, mit aromatischen Säu  ren sind sehr stark wirksame     Lokalanästhe-          tica.     



  Es wurde nun gefunden, dass in den  fettaromatischen Estern dieser     Ainirioalkohole     die     lokalanästhetische    Wirkung fast völlig       ztirüektritt,    dass ihnen aber statt dessen eine  ausserordentlich starke krampflösende Wir  kung     zukommt,    die bei einzelnen Gliedern  die Wirkung des     Papaverins    erheblich über  trifft.  



  Die als     Ausgangsstoffe        dienenden        Amino-          alkohole    können aus den nach den Ver  fahren der Patentschriften 147156, 151127    bis     15l130,    151134 und     151135    erhaltenen       Aminoaldehyden    durch Reduktion mit Na  triumamalgam in schwach essigsaurer Lö  sung gewonnen werden.  



  Gegenstand der vorliegenden Erfindung  ist ein Verfahren zur Darstellung von 1-Tropa       säure-2,2-dimethyl-3-dimethylaminopropanol-          ester,    welches dadurch gekennzeichnet ist,  dass man auf     2,2-Dimethyl-3-dimethylamino-          propylhalogenide    ein Salz der     1-Tropasäure     einwirken lässt.  



  Die bisher unbekannten Halogenverbin  dungen des     2,2-Dimethyl-3-dimethylamino-          propanols    entstehen leicht und in guter Aus  beute bei der Einwirkung der üblichen     Halo-          genierungsmittel,    wie zum Beispiel     Thionyl-          chlorid.    Es sind farblose, im Vakuum     un-          zersetzt    destillierbare Öle, die mit den       Halogenwasserstoffsäuren    feste Salze bilden.  



  Der     1-Tropasäure-2,2-dimethyl-3-dimethyl-          aminopropanolester    bildet ein farbloses Öl.  Seine Salze mit     Mineralsäuren    sind flüssig      und leicht löslich in Wasser. Das Drehungs  vermögen des     1-Tropasäure-2,2-dimethyl-3-          dimethylaminopropanolester-ist        (a)n    =-44  .  



  Er soll als Arzneimittel Verwendung  finden.  



  <I>Beispiel:</I>  20 Teile trockenes     1-tropasaur-es        Kalium     werden mit 18 Teilen     2,2-Dimethyl-3-dime-          thylaminopropylchlorid    (erhalten aus     Dime-          thyldimethylaminopropanolhydrochlorid    durch       Erwärmen    mit     Thioriylcblorid)-und    100 Teilen  Benzol 3 Stunden am     Rückfluss    gekocht. Man  filtriert vom Rückstand ab, schüttelt mit  verdünnter Salzsäure aus und fällt das Per  chlorat des Esters durch Zusatz einer kon  zentrierten     Natriumperchloratlösung    aus Öl  aus.

   Dieses wird abgetrennt, mit Wasser  gewaschen und dann mit Äther und     Natrium-          carbonatlösung    geschüttelt. Die Ätherlösung  wird getrocknet und     eingedunstet.    Der 1-Tropa-         säure-2,2-dimetlryl-3-dirnethylarninopropanol-          ester    bleibt als farbloses Öl, das schwerer  ist als     Wasser,    zurück.



  Process for the preparation of 1-tropic acid-2,2-dimethyl-3-dimethylamino-propanol ester. The esters of amino alcohols of the general formula
EMI0001.0004
    where R is alkyl and R. ' denotes an alkyl or hydrogen, with aromatic acids are very effective local anesthetics.



  It has now been found that in the fatty aromatic esters of these Ainirioalcohols the local anesthetic effect is almost completely reduced, but that instead they have an extraordinarily strong antispasmodic effect, which considerably exceeds the effect of papaverine in individual limbs.



  The amino alcohols used as starting materials can be obtained from the amino aldehydes obtained by the methods of patents 147156, 151127 to 151130, 151134 and 151135 by reduction with sodium amalgam in weakly acetic acid solution.



  The present invention relates to a process for the preparation of 1-tropic acid-2,2-dimethyl-3-dimethylaminopropanol ester, which is characterized in that a salt of 1 is added to 2,2-dimethyl-3-dimethylaminopropyl halides -Tropic acid can act.



  The previously unknown halogen compounds of 2,2-dimethyl-3-dimethylaminopropanol are formed easily and in good yield when exposed to the usual halogenating agents, such as thionyl chloride. They are colorless oils that can be distilled in a vacuum without decomposing and that form solid salts with the hydrohalic acids.



  The 1-tropic acid-2,2-dimethyl-3-dimethyl-aminopropanol ester forms a colorless oil. Its salts with mineral acids are liquid and easily soluble in water. The rotation capacity of 1-tropic acid-2,2-dimethyl-3-dimethylaminopropanol ester is (a) n = -44.



  It should be used as a medicine.



  <I> Example: </I> 20 parts of dry 1-tropic acid potassium are mixed with 18 parts of 2,2-dimethyl-3-dimethylaminopropyl chloride (obtained from dimethyldimethylaminopropanol hydrochloride by heating with thioriyl chloride) and 100 parts of benzene 3 Boiled under reflux for hours. The residue is filtered off, extracted with dilute hydrochloric acid, and the perchlorate of the ester is precipitated from oil by adding a concentrated sodium perchlorate solution.

   This is separated off, washed with water and then shaken with ether and sodium carbonate solution. The ether solution is dried and evaporated. The 1-tropic acid-2,2-dimethyl-3-methylamino-propanol ester remains as a colorless oil that is heavier than water.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von 1-Tropa säure-2,2-dimethyl-3-dimethylamirropropanol- ester, dadurch gekennzeichnet, dass man auf 2,2 - Dimethyl - 3 - dimethylaminopropylbalo- genide ein Salz der 1-Tropäsäure einwirken lässt. Der 1-Tropasäure-2,2-dimethyl-3-dimethyl- amirroproparrolester bildet ein farbloses Öl. Seine Salze mit Mineralsäuren sind flüssig und leicht löslich in Wasser. PATENT CLAIM: Process for the preparation of 1-tropic acid-2,2-dimethyl-3-dimethylamirropropanol ester, characterized in that a salt of 1-tropic acid is allowed to act on 2,2-dimethyl-3-dimethylaminopropylbalogenide. The 1-tropic acid-2,2-dimethyl-3-dimethyl-amirroproparrolester forms a colorless oil. Its salts with mineral acids are liquid and easily soluble in water. Das Drehungs vermögen des 1-Tropasäure-2,2-dimethyl-3- dimethylaminopropanolester ist (a)n=-44 . Er soll als Arzneimittel Verwendung finden. The rotation capacity of 1-tropic acid-2,2-dimethyl-3-dimethylaminopropanol ester is (a) n = -44. It should be used as a medicine.
CH179697D 1932-03-22 1934-02-06 Process for the preparation of 1-tropic acid-2,2-dimethyl-3-dimethylaminopropanol ester. CH179697A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE139454X 1932-03-22
DEH136773D DE594085C (en) 1932-03-22 1933-07-07 Process for the production of basic esters of fatty acids
CH174811T 1934-02-06

Publications (1)

Publication Number Publication Date
CH179697A true CH179697A (en) 1935-09-15

Family

ID=34068605

Family Applications (3)

Application Number Title Priority Date Filing Date
CH179696D CH179696A (en) 1932-03-22 1934-02-06 Process for the preparation of d-tropic acid-2,2-dimethyl-3-diethylaminopropanol ester.
CH179697D CH179697A (en) 1932-03-22 1934-02-06 Process for the preparation of 1-tropic acid-2,2-dimethyl-3-dimethylaminopropanol ester.
CH179698D CH179698A (en) 1932-03-22 1934-02-06 Process for the preparation of mandelic acid-2,2-dimethyl-3-diethylaminopropanol ester.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CH179696D CH179696A (en) 1932-03-22 1934-02-06 Process for the preparation of d-tropic acid-2,2-dimethyl-3-diethylaminopropanol ester.

Family Applications After (1)

Application Number Title Priority Date Filing Date
CH179698D CH179698A (en) 1932-03-22 1934-02-06 Process for the preparation of mandelic acid-2,2-dimethyl-3-diethylaminopropanol ester.

Country Status (1)

Country Link
CH (3) CH179696A (en)

Also Published As

Publication number Publication date
CH179698A (en) 1935-09-15
CH179696A (en) 1935-09-15

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