CH354767A - Process for the preparation of a 1,3-propanediol derivative - Google Patents

Process for the preparation of a 1,3-propanediol derivative

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Publication number
CH354767A
CH354767A CH354767DA CH354767A CH 354767 A CH354767 A CH 354767A CH 354767D A CH354767D A CH 354767DA CH 354767 A CH354767 A CH 354767A
Authority
CH
Switzerland
Prior art keywords
propanediol
methyl
phenyl
preparation
mixture
Prior art date
Application number
Other languages
French (fr)
Inventor
Milan Berger Frank
John Ludwig Bernard
Original Assignee
Carter Prod Inc
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 Carter Prod Inc filed Critical Carter Prod Inc
Publication of CH354767A publication Critical patent/CH354767A/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C271/00Derivatives of carbamic acids, i.e. compounds containing any of the groups, the nitrogen atom not being part of nitro or nitroso groups
    • C07C271/06Esters of carbamic acids

Landscapes

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

Description

  

  



     Procédé    de   préparation d'un dérivé    du 1, 3-propane-diol
 La   présente invention    a pour objet un procédé de   préparation    du dicarbamate de 2-méthyl-2-phényl1,   3-propanesdiol,    qui est un   nouveau comlposé orga-      nique possédant    une activité antispasmodique d'une   intensité inhabituelle.   



   Ce   composé    est un   solide cristallisé blanc soluble    dans la   plupart des solvants organiques, mais    peu soluble dans l'eau. Il forme des solutions tstables   dans l'eau    et les solvants organiques. Par chauffage   ou ébullitilon avec    les acides   ou    les bases, il s'hydrolyse   avec formation    du 1, 3-propane-diol disubstituté en 2, 2   correspondant, d'ammoniaque    et d'anhydride carbonique.



   Le composé est   préparé,    selon   l'invention,    par   réaction d'échange    d'ester entre le   2-méthyl-2-plhényl-    1, 3-propane-diol et un uréthane de faible poids moléculaire. Dans   cette réaction, l'alcool    de faible poids   moléculaire contenu    dans deux équivalents d'unréthane est remplacé par   le 2-méthyl-2-phényl-1, 3-propane-    diol avec formaiton du dicarbamate   désiré.   



   Le 2-méthyl-2-phényl-1,3-propane-diol utilisé dans la fabrication du   composé nouveau    peut être   préparé    par   un procédé quelconque    connu, tel que, par exemple, par   réduction die l'ester malonique      disubstitué correspondlant    ou par condensation de la   formaldéhyde    et de   l'aldéhyde    hydratropique.



  Exemple :
 On dissout 16, 6 g de   2-méthyl-2-phényl-1, 3-pros      pane-dia    et 19 g d'éthyl-uréthane dans 200 cc de   toluène anhydre.    On ajoute 1 g d'isopropylate d'aluminium   et on distille    le mélange, de   manière à chas-    ser l'éthanol formé dans la   condensation    de l'éthyl  uréthanne    avec le   diol. L'éthanol distille    sous   forme      d'azéotrope avec    le   toluène bouillant environ à 77     C.



  On poursuit la distillation   jusqu'à élimination de    sensiblement la   quantité théorique d'éthanol.    On chasse le   toluène    du mélange par   distillation    sous   pression réduite    et   on épuise    le   résidu à l'aide d'un    mélange hydro-isopropanolique chaud. On laisse refroidir la solution chaude et   on obtient environ    6 g de dicarbamate purifié sous forme   d'un    solide cristallisé blanc,   légèrement    soluble dans   l'eau à    la   tempe-      rature ambiante    et   possédant    un point de fusion de 110-112  C.



  Analyse :
 Calculé pour C12H16N2O4 : N =   1 1, 1'@/o   
 Trouvé : N = 10,   6 ouzo   
   L'essai    de ce   compos6    sur des animaux d'expérience appropriés, tels que la souris, quant   à sa      faculté    de   prévenir    les   attaques survenant au cours de    l'électrochoc, montre qu'il   possède dles propriéltés      antispasmodiques    remarquables. IL exerce également une   action de,    relaxation sur   les muscles.   



     Le composé    obtenu selon le procédé de l'inven  tion est    principalement   destiné à l'administration    par voie orale, sous forme de pilules, de   comprimes ou    do capsules   préparés    selon les   procédés    bien   connus.   



  On peut le dissoudre dans un solvant convenable tel qu'un mélange d'eau et de   polyéthylène-glycol,    de   manière à obtenir    une solution propre   à l'adminis-    tration par inection ou par   voie rectale.   



   Le produit de départ peut être préparé comme suit :
 On dissout 53, 6 g d'aldéhyde hydratropique et 87 g de   solution    de   formaldéhyde à 37 /o dans 150cc      d'alcool.    On ajoute cette solution en   l'espace    de vingt   minutes à une solution    de 30 g d'hydroxyde de   postas-    sium dans   150 cc d'alcool.    On chauffe le mélange ainsi obtenu au reflux pendant deux heures et on chasse   l'alcool    par   distiuation.    On   épuise le résidu    que l'on effectue un échange d'ester entre le 2méthyl-2-phényl-1,3-propane-diol et un uréthane de faible   poids moléculaire.   




  



     Process for the preparation of a derivative of 1, 3-propanediol
 The present invention relates to a process for the preparation of 2-methyl-2-phenyl1, 3-propanesdiol dicarbamate, which is a novel organic compound possessing antispasmodic activity of unusual intensity.



   This compound is a white crystalline solid soluble in most organic solvents, but sparingly soluble in water. It forms stable solutions in water and organic solvents. By heating or boiling with acids or bases, it hydrolyses with formation of the corresponding 1,2-disubstituted 1, 3-propanediol, ammonia and carbon dioxide.



   The compound is prepared according to the invention by an ester exchange reaction between 2-methyl-2-plhenyl-1, 3-propanediol and a low molecular weight urethane. In this reaction, the low molecular weight alcohol contained in two equivalents of unrethane is replaced by 2-methyl-2-phenyl-1, 3-propanediol with formation of the desired dicarbamate.



   The 2-methyl-2-phenyl-1,3-propanediol used in the manufacture of the novel compound can be prepared by any known method, such as, for example, by reduction of the corresponding disubstituted malonic ester or by condensation. formaldehyde and hydratropic aldehyde.



  Example:
 16.6 g of 2-methyl-2-phenyl-1, 3-pros pane-dia and 19 g of ethyl-urethane are dissolved in 200 cc of anhydrous toluene. 1 g of aluminum isopropoxide is added and the mixture is distilled, so as to remove the ethanol formed in the condensation of ethyl urethane with the diol. Ethanol distilled as an azeotrope with toluene boiling at about 77 ° C.



  The distillation is continued until substantially the theoretical amount of ethanol has been removed. Toluene is removed from the mixture by distillation under reduced pressure and the residue is depleted with a hot hydro-isopropanol mixture. The hot solution is allowed to cool and about 6 g of purified dicarbamate are obtained as a white crystalline solid, slightly soluble in water at room temperature and having a melting point of 110-112 C.



  Analysis:
 Calculated for C12H16N2O4: N = 1 1, 1 '@ / o
 Found: N = 10, 6 ouzo
   Testing of this compound on suitable experimental animals, such as mice, for its ability to prevent attacks occurring during electroshock, shows that it has remarkable antispasmodic properties. It also exerts a relaxing action on the muscles.



     The compound obtained according to the process of the invention is mainly intended for oral administration, in the form of pills, tablets or capsules prepared according to well-known processes.



  It can be dissolved in a suitable solvent, such as a mixture of water and polyethylene glycol, so as to obtain a solution suitable for administration by injection or rectally.



   The starting material can be prepared as follows:
 53.6 g of hydratropic aldehyde and 87 g of a 37% solution of formaldehyde are dissolved in 150 cc of alcohol. This solution is added over the course of twenty minutes to a solution of 30 g of postasium hydroxide in 150 cc of alcohol. The mixture thus obtained is heated under reflux for two hours and the alcohol is distilled off. The residue is depleted by an ester exchange between 2methyl-2-phenyl-1,3-propanediol and a low molecular weight urethane.


 

Claims (1)

SOUS-REVENDICATION Procédé selon la revendication, caractérisé en ce que l'on chauffe un mélange de 2-méthyl-2-phényl- 1, 3-propane-diol et d'éthyl-uréthane et en ce que l'on élimine l'éthanol formé par distillation. au moyen d'éther et on obtient le produit brut par distillation du solvant. On fait recristalliser le pro- duit au sein de benzène et d'éther de pétrole. On obtient 45 g de 2-méthyl-2-phényl-1, 3-propane-diol fondant à 81-820 C. SUB-CLAIM Process according to claim, characterized in that a mixture of 2-methyl-2-phenyl-1, 3-propane-diol and ethyl urethane is heated and in that the ethanol formed is removed by distillation. with ether and the crude product is obtained by distillation of the solvent. The product is recrystallized from benzene and petroleum ether. 45 g of 2-methyl-2-phenyl-1, 3-propanediol are obtained, melting at 81-820 C. REVENDICATION Procédé de préparation du dicarbamate de 2 méthyl-2-phényl-1, 3-propane-diol, caractérisé en ce CLAIM Process for preparing 2 methyl-2-phenyl-1, 3-propanediol dicarbamate, characterized in that
CH354767D 1956-01-13 1957-01-11 Process for the preparation of a 1,3-propanediol derivative CH354767A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US354767XA 1956-01-13 1956-01-13

Publications (1)

Publication Number Publication Date
CH354767A true CH354767A (en) 1961-06-15

Family

ID=21882919

Family Applications (1)

Application Number Title Priority Date Filing Date
CH354767D CH354767A (en) 1956-01-13 1957-01-11 Process for the preparation of a 1,3-propanediol derivative

Country Status (1)

Country Link
CH (1) CH354767A (en)

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