BE650898A - - Google Patents

Info

Publication number
BE650898A
BE650898A BE650898DA BE650898A BE 650898 A BE650898 A BE 650898A BE 650898D A BE650898D A BE 650898DA BE 650898 A BE650898 A BE 650898A
Authority
BE
Belgium
Prior art keywords
emi
water
washed
tetracetate
filtered
Prior art date
Application number
Other languages
French (fr)
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.)
Publication of BE650898A publication Critical patent/BE650898A/fr

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J53/00Steroids in which the cyclopenta(a)hydrophenanthrene skeleton has been modified by condensation with a carbocyclic rings or by formation of an additional ring by means of a direct link between two ring carbon atoms, including carboxyclic rings fused to the cyclopenta(a)hydrophenanthrene skeleton are included in this class

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Steroid Compounds (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)

Description

       

   <EMI ID=1.1> 

  
Il ressort, du brevet allemand 1 092 013 en date

  
du 7 février 1959 et du brevet des Etats-Unis No. 3 002 969 en

  
date du 28 avril_1958 qu'il est possible de faire oxyder des <EMI ID=2.1>  

  
 <EMI ID=3.1> 

  
 <EMI ID=4.1> 

  

 <EMI ID=5.1> 


  
Pour réaliser le procéder on dissout ou on met en suspension un 

  
 <EMI ID=6.1> 

  
de préférance dans 8 à 12 fois la quantité en poids de ce sol-  vant. Ensuite, on introduit du tétracétate de plomb solide, de  préférenca en excès, et, de façon appropriée, avec agitation.

  
 <EMI ID=7.1>  <EMI ID=8.1> 

  
mosphère d'azote. Dans ces conditions, la réaction est généralement terminée au bout de 60 à 90 minutes. Pour éliminer l'excès de tétracétate de plomb, on ajoute un composé hydroxylé, de préférence un glycol, par exemple, l'éthylène-glycol. Par addition

  
 <EMI ID=9.1> 

  
de cette manière, les sels du plomb bivalent restent en solution.

  
Pour la purification, il suffit en général d'un lavage avec de

  
 <EMI ID=10.1>  

  
jvention sont obtenus avec de bons rendements et en état très

  
 <EMI ID=11.1> 

  
ple, dans de l'éther de pétrole. 

  
Comme substances de départ pour le procédé de 

  
 <EMI ID=12.1> 

  

 <EMI ID=13.1> 


  
 <EMI ID=14.1>  .la présente invention offre l'avantage d'une période de réaction .; considérablement réduite, d'un traitement ultérieur plus facile, d'une,consommation réduite de solvants et de meilleurs rendements partiellement quantitatifs.

  
La plupart des produits obtenus se'.on le procédé de l'invention sont connus comme produits intermédiaires intéres-

  
 <EMI ID=15.1> 

  
 <EMI ID=16.1> 

  
composés, comme indiqués dans l'exemple 3, selon le procédé de

  
 <EMI ID=17.1> 

  
Les exemples qui suivent illustrent l'invention sans toutefois en limiter la portée.

  
 <EMI ID=18.1> 

  
avec exclusion d'humidité et agitation dans une atmosphère d'azo-

  
 <EMI ID=19.1>   <EMI ID=20.1> 

  
au total,' on ajoute avec agitation, refroidissement modéré et 

  
 <EMI ID=21.1> 
3.5-cyclo-6-oxo-pregnane-20-one cristallise, on le filtre, on le lave avec de l'eau et on le sèche à 50[deg.]C sous pression réduite..

  
On obtient 8,2 g (98,8 % de la théorie) d'un point de fusion de.

  
 <EMI ID=22.1> 

  
6,29 g (78 % de la théorie) de 3.5-cyclo-6-oxo-17-éthylène-dihy-

  
 <EMI ID=23.1> 

  
 <EMI ID=24.1> 



   <EMI ID = 1.1>

  
It appears from German patent 1,092,013 dated

  
of February 7, 1959 and United States Patent No. 3,002,969 in

  
date April 28_1958 that it is possible to oxidize <EMI ID = 2.1>

  
 <EMI ID = 3.1>

  
 <EMI ID = 4.1>

  

 <EMI ID = 5.1>


  
To carry out the procedure, we dissolve or suspend a

  
 <EMI ID = 6.1>

  
preferably in 8 to 12 times the amount by weight of this solvent. Then solid lead tetracetate is introduced, preferably in excess, and suitably with stirring.

  
 <EMI ID = 7.1> <EMI ID = 8.1>

  
nitrogen mosphere. Under these conditions, the reaction is generally complete after 60 to 90 minutes. To remove excess lead tetracetate, a hydroxy compound is added, preferably a glycol, for example ethylene glycol. By addition

  
 <EMI ID = 9.1>

  
in this way, the salts of the divalent lead remain in solution.

  
For purification, it is generally sufficient to wash with

  
 <EMI ID = 10.1>

  
jvention are obtained with good yields and in very good condition.

  
 <EMI ID = 11.1>

  
ple, in petroleum ether.

  
As starting materials for the process of

  
 <EMI ID = 12.1>

  

 <EMI ID = 13.1>


  
 <EMI ID = 14.1> The present invention offers the advantage of a reaction period. considerably reduced, easier subsequent processing, reduced solvent consumption and better partially quantitative yields.

  
Most of the products obtained by the process of the invention are known as useful intermediates.

  
 <EMI ID = 15.1>

  
 <EMI ID = 16.1>

  
compounds, as indicated in Example 3, according to the method of

  
 <EMI ID = 17.1>

  
The examples which follow illustrate the invention without, however, limiting its scope.

  
 <EMI ID = 18.1>

  
with exclusion of moisture and agitation in an atmosphere of nitrogen

  
 <EMI ID = 19.1> <EMI ID = 20.1>

  
in total, 'is added with stirring, moderate cooling and

  
 <EMI ID = 21.1>
3.5-cyclo-6-oxo-pregnane-20-one crystallizes, it is filtered, washed with water and dried at 50 [deg.] C under reduced pressure.

  
8.2 g (98.8% of theory) with a melting point of.

  
 <EMI ID = 22.1>

  
6.29 g (78% of theory) 3.5-cyclo-6-oxo-17-ethylene-dihy-

  
 <EMI ID = 23.1>

  
 <EMI ID = 24.1>


    

Claims (1)

<EMI ID=25.1> <EMI ID = 25.1> de. pyridine. Après' avoir agité le mélange réactionnel dans 300 cm3 d'eau, on essore le précipité qui est séparé et on le lave <EMI ID=26.1> of. pyridine. After having stirred the reaction mixture in 300 cm3 of water, the precipitate which is separated is filtered off and washed <EMI ID = 26.1> <EMI ID=27.1> <EMI ID = 27.1> On lave les 'extraits benzéniques jusqu'à neutralité avec de la solution de bicarbonate de sodium et' -avec de l'eau. Apres évapora The benzene extracts are washed until neutral with sodium bicarbonate solution and with water. After evapora <EMI ID=28.1> <EMI ID = 28.1> <EMI ID=29.1> <EMI ID = 29.1> du tétracétate de Aplomb dans du suif oxyde de diméthyle. Aplomb tetracetate in tallow dimethyl ether. 2) .Un procédé comme décrit sous 1) qui consiste 2) A process as described under 1) which consists <EMI ID=30.1> <EMI ID = 30.1>
BE650898D 1963-07-23 BE650898A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF40303A DE1214222B (en) 1963-07-23 1963-07-23 Process for the production of 3, 5-cyclo-6-oxo-steroids of the Pregnan, Pregnen, Androstan- and Androstan series

Publications (1)

Publication Number Publication Date
BE650898A true BE650898A (en)

Family

ID=7098172

Family Applications (1)

Application Number Title Priority Date Filing Date
BE650898D BE650898A (en) 1963-07-23

Country Status (2)

Country Link
BE (1) BE650898A (en)
DE (1) DE1214222B (en)

Also Published As

Publication number Publication date
DE1214222B (en) 1966-04-14

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