CH286746A - A process for preparing an aromatic diacylated aminodiol. - Google Patents

A process for preparing an aromatic diacylated aminodiol.

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Publication number
CH286746A
CH286746A CH286746DA CH286746A CH 286746 A CH286746 A CH 286746A CH 286746D A CH286746D A CH 286746DA CH 286746 A CH286746 A CH 286746A
Authority
CH
Switzerland
Prior art keywords
phenyl
reg
diacetylation
radical
aminodiol
Prior art date
Application number
Other languages
French (fr)
Inventor
Company Parke Davis
Original Assignee
Parke Davis & Co
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 Parke Davis & Co filed Critical Parke Davis & Co
Publication of CH286746A publication Critical patent/CH286746A/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C231/00Preparation of carboxylic acid amides
    • C07C231/02Preparation of carboxylic acid amides from carboxylic acids or from esters, anhydrides, or halides thereof by reaction with ammonia or amines

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

Description

  

  Procédé de préparation d'un     aminodiol        diacylé    aromatique.    Dans le brevet principal, on a décrit un  procédé de préparation du     '1é-1-phényl-2-          acétamido-3-acétoxypropane-ol-(1.).    Le présent  brevet a pour objet un procédé de préparation  de l'isomère régulier     (cis)    correspondant.

   Ce  procédé est caractérisé en ce que l'on soumet  le     rég.-l-phényl-2-aminopropane-1,3-diol    .à une       diacétylation    par chauffage avec un dérivé de  l'acide acétique contenant au moins un radi  cal     CHpC0-,    dans des conditions telles que,  par fixation d'un radical     CHsC0-    sur le  groupe     amino    et d'un autre radical     CH3C0-          sur    le groupe hydroxyle se trouvant en posi  tion 3, il se forme le     rég.-l-phényl-2-acét-          amido-3-acétoxypropane-ol-(1)    .  



  Le     rég.-l-phényl-2-acétamido-3-acétoxypro-          pane-ol-(1)    est une nouvelle substance, laquelle  est cristallisée et présente un point de fusion  de 110-111  C (forme racémique). On peut  citer comme dérivés appropriés pour effectuer  ladite     diacétylation    les halogénures ou l'an  liydride de l'acide acétique.

   Pour effectuer la       diacétylation,    on chauffe un dérivé de l'acide  acétique contenant au moins un radical acé  tyle avec le     rég.-l-phényl-2-aminopropane-1,3-          diol,    d'ordinaire pendant une courte période  clé temps, en introduisant ainsi les deux       groupes    acétyle sur le groupe     amino    et sur le  groupe     hy        droxyle    final du     rég.-l-phényl-2-          aminopropane-1,3-diol.    Il suffit de chauffer  le mélange réactionnel de 5 à 30 minutes à  une température de 60-135  C.

      De préférence, on soumet à la     diacétyla-          tion    la forme racémique (dl)     dudit        rég.-1-          phényl-2-aminopropane-1,3-diol.     



  Le produit obtenu par le présent brevet  est un produit intermédiaire pour la prépa  ration de composés ayant une activité anti  biotique.  



       Exemple:     On chauffe, à 70  C, 8 g de     dl-rég.-l-phé-          nyl-2-aminopropane-1,3-diol,    pendant 15 mi  nutes, avec 20     cïns    d'anhydride acétique. On  évapore le mélange réactionnel à siccité dans  le vide et on cristallise le résidu dans de  l'éthanol pour obtenir le     dl-rég.-l-phényl-2-          acétamido-3-acétoxypropane-ol-(1)    recherché;  point de fusion: 110-l11  C: Ce     produit    ré  pond à la formule  
EMI0001.0039     




  A process for preparing an aromatic diacylated aminodiol. In the main patent, a process for the preparation of 1é-1-phenyl-2-acetamido-3-acetoxypropan-ol- (1.) Has been described. The present patent relates to a process for the preparation of the corresponding regular (cis) isomer.

   This process is characterized in that the reg.-1-phenyl-2-aminopropane-1,3-diol is subjected to a diacetylation by heating with an acetic acid derivative containing at least one radi cal CHpC0- , under conditions such that, by attachment of a CHsC0- radical to the amino group and another CH3C0- radical to the hydroxyl group in position 3, the reg.-1-phenyl-2 is formed -acet-amido-3-acetoxypropan-ol- (1).



  Reg.-1-Phenyl-2-acetamido-3-acetoxypropan-ol- (1) is a new substance, which is crystallized and has a melting point of 110-111 C (racemic form). Mention may be made, as derivatives suitable for carrying out said diacetylation, of the halides or an hydride of acetic acid.

   To effect the diacetylation, an acetic acid derivative containing at least one acetyl radical is heated with the reg-1-phenyl-2-aminopropane-1,3-diol, usually for a short period of time. thus introducing the two acetyl groups on the amino group and on the final hydroxyl group of the reg.-1-phenyl-2-aminopropane-1,3-diol. It is sufficient to heat the reaction mixture for 5 to 30 minutes at a temperature of 60-135 C.

      Preferably, the racemic form (dl) of said reg.-1-phenyl-2-aminopropane-1,3-diol is subjected to diacetylation.



  The product obtained by the present patent is an intermediate product for the preparation of compounds having anti-biotic activity.



       Example: Heated to 70 ° C., 8 g of dl-reg.-1-phenyl-2-aminopropane-1,3-diol, for 15 minutes, with 20 cins of acetic anhydride. The reaction mixture is evaporated to dryness in vacuo and the residue crystallized from ethanol to give the desired dl-reg.-1-phenyl-2-acetamido-3-acetoxypropan-ol- (1); melting point: 110-l11 C: This product corresponds to the formula
EMI0001.0039


 

Claims (1)

REVENDICATION Procédé de préparation d'un aminodiol di- acylé aromatique, caractérisé en ce que l'on soumet le rég.-l-phényl-2-aminopropane-1,3- diol à une diacétylation par chauffage avec un dérivé de l'acide acétique contenant au moins un radical CII3C0-, dans des condi tions telles que, par fixation d'un radical C1I3C0- sur le groupe amino et d'un autre radical CH3C0- sur le groupe hydroxyle se trouvant en position 3, CLAIM Process for preparing an aromatic di-acylated aminodiol, characterized in that the reg.-1-phenyl-2-aminopropane-1,3-diol is subjected to diacetylation by heating with an acid derivative. acetic containing at least one CII3C0- radical, under conditions such as, by attaching a C1I3C0- radical to the amino group and another CH3C0- radical to the hydroxyl group in position 3, il se forme le rég.-1- phényl- 2 - acétamido - 3-acétoxypropane-ol- (1). Ce produit est une substance cristallisée ayant un point de fusion de 110-111 C (forme racémique). SOUS-REVENDICATIONS 1. Procédé selon la revendication, caracté risé en ce que l'on soumet à ladite diacétyla- tion la forme racémique (dl) du rég.-l.-phényl- 2-aminopropane-1,3-diol. 2. the reg.-1-phenyl-2-acetamido-3-acetoxypropan-ol- (1) is formed. This product is a crystalline substance with a melting point of 110-111 C (racemic form). SUB-CLAIMS 1. Process according to claim, characterized in that the racemic form (dl) of the reg.-l.-phenyl-2-aminopropane-1,3-diol is subjected to said diacetylation. 2. Procédé selon la revendication, caracté risé en ce que l'on çmploie pour ladite diacé- tylation un halogénure de l'acide acétique. 3. Procédé selon la revendication, caracté risé en ce que l'on emploie comme dérivé de l'acide acétique l'anhydride acétique. A process according to claim 1, characterized in that an acetic acid halide is used for said diacetylation. 3. Method according to claim, characterized in that acetic anhydride is used as acetic acid derivative.
CH286746D 1948-03-16 1948-12-15 A process for preparing an aromatic diacylated aminodiol. CH286746A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US286746XA 1948-03-16 1948-03-16
CH282088T 1948-12-15

Publications (1)

Publication Number Publication Date
CH286746A true CH286746A (en) 1952-10-31

Family

ID=25732140

Family Applications (1)

Application Number Title Priority Date Filing Date
CH286746D CH286746A (en) 1948-03-16 1948-12-15 A process for preparing an aromatic diacylated aminodiol.

Country Status (1)

Country Link
CH (1) CH286746A (en)

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