CH296185A - Process for the preparation of a novel derivative of phenothiazine. - Google Patents

Process for the preparation of a novel derivative of phenothiazine.

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Publication number
CH296185A
CH296185A CH296185DA CH296185A CH 296185 A CH296185 A CH 296185A CH 296185D A CH296185D A CH 296185DA CH 296185 A CH296185 A CH 296185A
Authority
CH
Switzerland
Prior art keywords
phenothiazine
preparation
chloro
propane
novel derivative
Prior art date
Application number
Other languages
French (fr)
Inventor
Rhone-Poulenc Societ Chimiques
Original Assignee
Rhone Poulenc Chemicals
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 Rhone Poulenc Chemicals filed Critical Rhone Poulenc Chemicals
Publication of CH296185A publication Critical patent/CH296185A/en

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  • Nitrogen- Or Sulfur-Containing Heterocyclic Ring Compounds With Rings Of Six Or More Members (AREA)

Description

  

  Procédé de préparation d'un nouveau dérivé de la     phénothiazine.       La présente invention a pour objet un  procédé de     préparation    d'un nouveau dérivé  'de la     phénothiazine,    la     chloro-3-(diméthyl-          amino-3'-.propyl)-10-phénothiazine    répondant  s à la formule  
EMI0001.0006     
    Le procédé selon la présente invention est.

         caractérisé    en ce que l'on fait réagir un     di-          méthylamino    - 3 -     halogéno    -1- propane sur la       ehloro-3-phénothiazine.    De préférence, on  effectue la réaction en présence d'un agent  clé     condensation    susceptible de donner un dé  rivé métallique avec la     phénothiazine.    Ces  agents     appartiennent    au groupe des métaux  alcalins ou de leurs dérivés (hydroxydes, hy  drures,     amidures,        alcoolates,    alcoyl- ou     aryl-          dérivés    de métaux).

   Dans ce domaine, on ci  tera plus     particulièrement        l'amidure    de so  dium, le     sodium    métallique, la soude ou la po  tasse en poudre, l'hydrure de lithium, le       tertiobutylate    de sodium, le     butyllithium,    le       phényllithium.     



  On opère de préférence dans un solvant  organique, à. la température d'ébullition de ce  solvant. Il est particulièrement avantageux  d'utiliser le     diméthylamino    - 3 -     halogéno-1-          propane    sous     forme    de base libre en solution,    par exemple dans le benzène, le toluène ou le  xylène, et de l'ajouter au mélange des autres  réactifs dans lequel la     chloro-3-phénothiazine     peut déjà se présenter, du moins en partie,  sous forme de sel alcalin.

   On peut également  effectuer la réaction sans agent de condensa  tion en introduisant peu à peu la solution de       diméthylamino-3-halogéno-1-propane    dans la       ehloro-3-phénothiazine    fondue.  



  La réaction peut également être réalisée  avec un sel du     diméthylamino-3-halogén.o-1-          propane,        mais,    dans ce cas, il faut évidem  ment mettre une proportion d'agent, de con  densation plus forte, de     facon    à neutraliser  l'acide du sel du diméthylamino-3-halogéno-1-         propane.       La     chlorob3-phénothiazine    utilisée comme  matière de départ est     préparée    par condensa  tion du soufre sur la     méta-chlorodiphényl-          amine.     



  La     chloro-3-(diméthylainino-3'-propyl)-10-          phénothiazine    obtenue par le procédé de l'in  vention est une nouvelle substance liquide  dont le     chlorhydrate    fond à 177-178  C. Elle  possède des propriétés physiologiques pré  cieuses qui permettent de l'utiliser comme  antihistaminique,     ganglioplégique,        spasmoly      tique, anesthésique local analgésique, sympa  tholytique,     antifuirgique.    Enfin, elle s'est ré  vélée     particulièrement    intéressante     comme          potentialisateur    des anesthésiques généraux,  des analgésiques et des anesthésiques locaux.

        L'exemple suivant illustre le procédé de  l'invention.  



       Exemple:     A une suspension bouillante de 11,6 - de       ehloro-3-phénothiazine    et.     ?,-1        g        d'amidure    de  sodium (à.     80%)    dans 60     em3    de     xvlène,    on  ajoute en une heure 7,5 g de     dim6thvlamino-          3-chloro-1-propane    en solution dans son poids  de     xylène.    Après la fin de l'addition, on  chauffe encore une heure à reflux. Après re  froidissement, on reprend par .de l'eau acidu  lée et sépare le xylène.

   On rend la couche       aqueuse    fortement alcaline .au moyen de soude  pour mettre la base en liberté et on l'extrait  à. l'éther. Par rectification de l'extrait. éthéré,  on obtient la     chloro-3-(diméthylamino-3'-pro-          pyl)-10-phénothiazine    qui distille     â.    200 à       \-_'05     C sous 0,8 mm. Son chlorhydrate, recris  tallisé dans le chlorobenzène, fond à 177 à       l.78     C.



  Process for the preparation of a novel derivative of phenothiazine. The present invention relates to a process for preparing a novel derivative 'of phenothiazine, chloro-3- (dimethyl-amino-3' -. Propyl) -10-phenothiazine corresponding to the formula
EMI0001.0006
    The method according to the present invention is.

         characterized in that a dimethylamino - 3 - halogeno -1-propane is reacted with the 3-chloro-phenothiazine. Preferably, the reaction is carried out in the presence of a key condensing agent capable of giving a metallic derivative with the phenothiazine. These agents belong to the group of alkali metals or their derivatives (hydroxides, hydrides, amides, alcoholates, alkyl- or aryl- derivatives of metals).

   In this field, there will be more particularly sodium amide, metallic sodium, soda or powdered sodium hydroxide, lithium hydride, sodium tert-butoxide, butyllithium, phenyllithium.



  The operation is preferably carried out in an organic solvent, at. the boiling point of this solvent. It is particularly advantageous to use dimethylamino - 3 - halogeno-1-propane in the form of the free base in solution, for example in benzene, toluene or xylene, and to add it to the mixture of other reagents in which the 3-chloro-phenothiazine can already be present, at least in part, as an alkali salt.

   The reaction can also be carried out without a condensing agent by gradually introducing the solution of 3-dimethylamino-halo-1-propane into molten 3-chloro-phenothiazine.



  The reaction can also be carried out with a salt of dimethylamino-3-halogen.o-1-propane, but, in this case, it is obviously necessary to put a proportion of agent, of stronger condensation, so as to neutralize the Acid of the salt of dimethylamino-3-halo-1-propane. Chlorob3-phenothiazine used as a starting material is prepared by condensing sulfur with meta-chlorodiphenylamine.



  Chloro-3- (dimethylainino-3'-propyl) -10-phenothiazine obtained by the process of the invention is a new liquid substance, the hydrochloride of which melts at 177-178 C. It has valuable physiological properties which allow to use it as an antihistamine, ganglioplegic, spasmolyte, analgesic local anesthetic, sympathetic tholytic, antifuirgic. Finally, it has proved particularly interesting as a potentiator of general anesthetics, analgesics and local anesthetics.

        The following example illustrates the process of the invention.



       Example: To a boiling suspension of 11,6 - of ehloro-3-phenothiazine and. ?, - 1 g of sodium amide (at. 80%) in 60 em3 of xylene, 7.5 g of dim6thvlamino-3-chloro-1-propane in solution in its weight of xylene are added in one hour. After the end of the addition, the mixture is heated for a further hour at reflux. After cooling, the residue is taken up in acidulated water and the xylene is separated.

   The aqueous layer is made strongly alkaline by means of sodium hydroxide to liberate the base and extracted with. ether. By rectification of the extract. ethereal gives chloro-3- (dimethylamino-3'-propyl) -10-phenothiazine which distills α. 200 to \ -_ '05 C under 0.8 mm. Its hydrochloride, recreated tallized in chlorobenzene, melts at 177 to 1.78 C.

 

Claims (1)

REVENDICATION Procédé de préparation de la ehloro-3-(di- méthvl.amino-3'-propyl)-10-phénothiazine ré pondant à la formule EMI0002.0020 caractérisé en ce que l'on fait réagir. un di- méthy1amino - 3 - halogéno - 1- propane sur la chloro-3-phénothiazine. Le produit ainsi obtenu est. une substance liquide dont le chlorhydrate cristallisé fond à 177-17811 C. Il sert en thérapeutique. CLAIM Process for the preparation of ehloro-3- (di-methvl.amino-3'-propyl) -10-phenothiazine corresponding to the formula EMI0002.0020 characterized in that one reacts. a di-methylamino - 3 - halogeno - 1-propane on the chloro-3-phenothiazine. The product thus obtained is. a liquid substance whose crystallized hydrochloride melts at 177-17811 C. It is used in therapy.
CH296185D 1950-12-21 1951-11-16 Process for the preparation of a novel derivative of phenothiazine. CH296185A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR296185X 1950-12-21

Publications (1)

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CH296185A true CH296185A (en) 1954-01-31

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CH296185D CH296185A (en) 1950-12-21 1951-11-16 Process for the preparation of a novel derivative of phenothiazine.
CH304626D CH304626A (en) 1950-12-21 1952-12-03 Process for the preparation of a novel derivative of phenothiazine.

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CH304626D CH304626A (en) 1950-12-21 1952-12-03 Process for the preparation of a novel derivative of phenothiazine.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1134077B (en) * 1956-02-25 1962-08-02 Egyt Gyogyszervegyeszeti Gyar Process for the preparation of 3-chloro-10- (3'-dimethylaminopropyl) -phenthiazine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1090216B (en) * 1956-04-07 1960-10-06 Rhone Poulenc Sa Process for the preparation of 1-methanesulfonyl- and 3-methanesulfonylphenthiazine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1134077B (en) * 1956-02-25 1962-08-02 Egyt Gyogyszervegyeszeti Gyar Process for the preparation of 3-chloro-10- (3'-dimethylaminopropyl) -phenthiazine

Also Published As

Publication number Publication date
CH304626A (en) 1955-01-15

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