AT140431B - Process for the preparation of solutions of organic substances which are poorly soluble or insoluble in water, with the exception of substances similar to proteins and fats. - Google Patents

Process for the preparation of solutions of organic substances which are poorly soluble or insoluble in water, with the exception of substances similar to proteins and fats.

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Publication number
AT140431B
AT140431B AT140431DA AT140431B AT 140431 B AT140431 B AT 140431B AT 140431D A AT140431D A AT 140431DA AT 140431 B AT140431 B AT 140431B
Authority
AT
Austria
Prior art keywords
substances
water
insoluble
solutions
exception
Prior art date
Application number
Other languages
German (de)
Inventor
Mag Pharm Franz Wratschko
Original Assignee
Eggochemia Fabrik Chemischer U
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 Eggochemia Fabrik Chemischer U filed Critical Eggochemia Fabrik Chemischer U
Application granted granted Critical
Publication of AT140431B publication Critical patent/AT140431B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Herstellung von Lösungen von an sich in Wasser schwer löslichen oder unlöslichen organisehen Stoffen, ausgenommen von Eiweiss- und fettähnlichen Stoffen. 



   Es ist bekannt, dass die Amide der niederen Fettsäuren die Löslichkeitsverhältnisse verschiedener in Wasser unlöslicher oder schwer   löslicher   Stoffe ganz beträchtlich verbessern können. Es kommen hiebei als zu lösende Stoffe solche von ganz verschiedenartiger Zusammensetzung in Betracht, wie z. B. 



  Alkaloidbasen, Kampfer, p-Aminobenzoesäurederivate, Glykoside, Gerbstoffe,   CC-disubstituierte   Bar- 
 EMI1.1 
 



   Nun ist aber dieses Lösungsvermögen der Fettsäureamide in vielen Fällen doch nicht ausreichend, um solche Konzentrationen an gelöstem Stoff zu erhalten, wie sie zur Erreichung bestimmter therapeutischer Effekte notwendig und   wünschenswert   sind. Aus diesem Grunde wurden verschiedene Kombinationen der Amide der niederen Fettsäuren, z. B. mit Carbaminsäureestern, Alkyl-oder Alkylenharnstoffen vorgeschlagen. 



   Gemäss der Erfindung kommt man zu ganz besonders günstigen Lösungsergebnissen, wenn man den Säureamiden bzw. ihren wässerigen Lösungen einen gewissen Prozentsatz eines Betains (am einfachsten   gewöhnliches   Trimethylbetain) zugibt. Je nach der Art des zu lösenden Stoffes lässt sich unter Umständen durch Zusatz von etwas gewöhnlichem Harnstoff oder Äthylalkohol oder beider das Lösungsvermögen der Amid-Betain-Kombination noch weiter verbessern. 



   Beispiele :
1..   10 g Phenyläthylbarbitursäure   werden mittels eines Lösungsmittels, das aus 65% Aeetamid, 
 EMI1.2 
 Formamid nehmen. 



   2. 30 g Dimethylaminophenyldimethylpyrazolon werden mittels eines Lösungsmittels, das aus 
 EMI1.3 
 



   PATENT-ANSPRÜCHE : j. Verfahren zur Herstellung von Lösungen von an sich in Wasser schwer   löslichen   oder unlöslichen organischen Stoffen, ausgenommen von   Eiweiss-und fettähnlichen   Stoffen, dadurch gekennzeichnet. dass man als Lösungsmittel Amide der niederen Fettsäuren in Verbindung mit Betainen bei Gegenwart oder Abwesenheit von Wasser verwendet. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Process for the preparation of solutions of organic substances which are sparingly soluble or insoluble in water, with the exception of protein and fat-like substances.



   It is known that the amides of the lower fatty acids can improve the solubility ratios of various substances which are insoluble or sparingly soluble in water quite considerably. The substances to be dissolved are those of very different compositions, such as B.



  Alkaloid bases, camphor, p-aminobenzoic acid derivatives, glycosides, tannins, CC-disubstituted bar-
 EMI1.1
 



   In many cases, however, this dissolving power of the fatty acid amides is not sufficient to obtain such concentrations of dissolved substance as are necessary and desirable to achieve certain therapeutic effects. For this reason, various combinations of the amides of the lower fatty acids, e.g. B. proposed with carbamic acid esters, alkyl or alkylene ureas.



   According to the invention, particularly favorable solution results are obtained if a certain percentage of a betaine (most simply ordinary trimethyl betaine) is added to the acid amides or their aqueous solutions. Depending on the type of substance to be dissolved, the solubility of the amide-betaine combination can possibly be further improved by adding some ordinary urea or ethyl alcohol or both.



   Examples:
1 .. 10 g of phenylethylbarbituric acid are removed by means of a solvent consisting of 65% acetamide,
 EMI1.2
 Take formamide.



   2. 30 g of dimethylaminophenyldimethylpyrazolone are removed by means of a solvent
 EMI1.3
 



   PATENT CLAIMS: j. Process for the production of solutions of organic substances which are sparingly soluble or insoluble in water, with the exception of substances similar to proteins and fat, characterized in that. that amides of the lower fatty acids are used as solvents in conjunction with betaines in the presence or absence of water.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der Amid-Betain-Kombination Harnstoff oder Äthylalkohol oder eine Lösung oder Mischung dieser beiden Medien zugesetzt wird. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. 2. The method according to claim 1, characterized in that urea or ethyl alcohol or a solution or mixture of these two media is added to the amide-betaine combination. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT140431D 1934-04-28 1934-04-28 Process for the preparation of solutions of organic substances which are poorly soluble or insoluble in water, with the exception of substances similar to proteins and fats. AT140431B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT140431T 1934-04-28

Publications (1)

Publication Number Publication Date
AT140431B true AT140431B (en) 1935-01-25

Family

ID=3641148

Family Applications (1)

Application Number Title Priority Date Filing Date
AT140431D AT140431B (en) 1934-04-28 1934-04-28 Process for the preparation of solutions of organic substances which are poorly soluble or insoluble in water, with the exception of substances similar to proteins and fats.

Country Status (1)

Country Link
AT (1) AT140431B (en)

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