DE660176C - Process for the preparation of water-soluble particles of 1-phenyl-2, 3-dimethyl-4-dimethylamino-5-pyrazolone - Google Patents

Process for the preparation of water-soluble particles of 1-phenyl-2, 3-dimethyl-4-dimethylamino-5-pyrazolone

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Publication number
DE660176C
DE660176C DEK130262D DEK0130262D DE660176C DE 660176 C DE660176 C DE 660176C DE K130262 D DEK130262 D DE K130262D DE K0130262 D DEK0130262 D DE K0130262D DE 660176 C DE660176 C DE 660176C
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Germany
Prior art keywords
water
dimethyl
phenyl
pyrazolone
dimethylamino
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DEK130262D
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German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HANS P KAUFMANN DR
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HANS P KAUFMANN DR
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Application filed by HANS P KAUFMANN DR filed Critical HANS P KAUFMANN DR
Priority to DEK130262D priority Critical patent/DE660176C/en
Application granted granted Critical
Publication of DE660176C publication Critical patent/DE660176C/en
Expired legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D231/00Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
    • C07D231/02Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
    • C07D231/10Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D231/14Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D231/44Oxygen and nitrogen or sulfur and nitrogen atoms
    • C07D231/46Oxygen atom in position 3 or 5 and nitrogen atom in position 4
    • C07D231/48Oxygen atom in position 3 or 5 and nitrogen atom in position 4 with hydrocarbon radicals attached to said nitrogen atom

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)

Description

Verfahren zur Darstellung von wasserlöslichen Abkömmlingen des 1-Phenyl-2, 3-dimethyl-4-dimethylamino-5-pyrazolons Infolge der geringen Löslichkeit des i-PhenyI-2,3-dimethyl-q.-dimethylamino-5-pyrazolons in Wasser ist es nicht möglich, stärker konzentrierte Lösungen desselben, beispielsweise zu Inj --kt:onszwecken, herzustellen. Das Patent 305 369 setzt daher Urethane zu, um die Wasserlöslichkeit zu steigern. Infolgedessen ist es möglich, das Dimethylaminophenyldimethylpyrazolon in gelöster Form in den Handel zu bringen oder es subkutan zu verwenden.Process for the preparation of water-soluble derivatives of 1-phenyl-2, 3-dimethyl-4-dimethylamino-5-pyrazolone as a result of the low solubility of i-phenyl-2,3-dimethyl-q.-dimethylamino-5-pyrazolone in water it is not possible to produce more concentrated solutions of the same, for example for injection purposes. Patent 305,369 therefore uses urethanes to increase water solubility. As a result, it is possible to market the dimethylaminophenyldimethylpyrazolone in a dissolved form or to use it subcutaneously.

Es wurde nun gefunden, daß die Löslichmachung des eingangs genannten Stoffes auch dadurch gelingt, daß man ihn in chemisch einheitliche, gut kristallisierte Verbindungen genügender Wasserlöslichkeit überführt. Es ließ sich nämlich feststellen, daß hierzu die Überführung des. i-Phenyl-2, 3-dimethyl-q.-dimethyl,amino-5-pyrazolons in Verbindungen mit bestimmten anorganischen Halogeniden geeignet ist. Als Halo genide kommen Calciumbromid und Calciumjodid in Frage. Es lassen sich aus diesen Halogeniden einwandfrei als Verbindungen erkennbare Stoffe gewinnen, die als Komplexverbindungen anzusprechen sind. Besondere Erwähnung muß eine wertvolle Eigenschaft der neuen Komplexsalze finden, nämlich ihre Luftbeständigkeit, die im voraus. nicht zu erwarten war und die in starkem Gegensatz zu dem Verhalten der an der Luft schnell zerfließenden anorganischen Komponenten steht. -Die Herstellung der neuen Verbindungen geschieht durch Eindampfen einer Lösung der Komponenten in Wasser oder einem organischen Lösungsmittel, zweckmäßig unter Anwendung eines Vakuums bei höherer Temperatur oder bei gewöhnlicher Temperatur über Schwefelsäure. In, schön, kristallisierter Form erhält man sie, indem man eine heiße konzentrierte Lösung der Kristallisation überläßt; dabei ist in manchen Fällen ein überschuß an 'anorganischem Salz nützlich. Ferner kann man eine Lösung, die eine Komponente im LUberschuß enthält, zur Trockne dampfen und den Ü'b-erschuß durch ein geeignetes organisches Lösungsmittel herauslösen, wobei die Verbindung in gleichbleibendem molekularem Verhältnis zurückbleibt. Beispiele 1. 15,5 Teile Calciumbromid-6H20 und io Teile i-Phenyl-2, 3-dimethyl-q.-dimethylamino-5-pyrazolon werden in i o Teilen Wasser warm gelöst und bei Eiskühlung kristallisieren lassen. Es scheiden sich langsam Kristalle aus der Zusammensetzung C13 H17 N3 0)2 ' Ca Br2 # 4H20, leicht wasserlöslich und luftbeständig.It has now been found that the substance mentioned at the outset can also be made soluble by converting it into chemically uniform, well-crystallized compounds of sufficient water solubility. It was found that the conversion of i-phenyl-2, 3-dimethyl-q.-dimethyl, amino-5-pyrazolone into compounds with certain inorganic halides is suitable for this purpose. Calcium bromide and calcium iodide can be used as halides. These halides can be used to obtain substances which can be recognized as compounds and which are to be addressed as complex compounds. Special mention must be made of a valuable property of the new complex salts, namely their air resistance, which must be given in advance. was not to be expected and which is in stark contrast to the behavior of the inorganic components, which dissolve rapidly in air. The new compounds are prepared by evaporating a solution of the components in water or an organic solvent, expediently using a vacuum at a higher temperature or at an ordinary temperature over sulfuric acid. They are obtained in beautiful, crystallized form by allowing a hot, concentrated solution to crystallize; in some cases an excess of the inorganic salt is useful. Furthermore, a solution which contains an excess of one component can be evaporated to dryness and the excess can be dissolved out using a suitable organic solvent, the compound remaining in a constant molecular ratio. EXAMPLES 1. 15.5 parts of calcium bromide-6H20 and 10 parts of i-phenyl-2,3-dimethyl-q.-dimethylamino-5-pyrazolone are dissolved in 10 parts of warm water and allowed to crystallize while cooling with ice. It slowly separates crystals from the composition C13 H17 N3 0) 2 'Ca Br2 # 4H20, easily soluble in water and air-resistant.

2. 46,2 Teile i-Phenyl-2, 3-dimethyl-q.-dimethyla.m.ino-5-pyrazolon und i9,9 Teile Cal--ciumbromid werden in Zoo Teilen Wasser heiß gelöst und auf dem Wasserbad im Vakuum zur Trockne gedampft. Der Rückstand wird aus Aceton umkristallisiert,: wobei das gleiche Komplexsalz erhalten: 'wie u,rt ter i. 3. io Teile i-Phenyl-2, , yl-4- A methylamino-5-pyrazo1on und 8 Ca:cium,-'" jodid werden iri, io Teilen Wasser gelöst und bei Eiskühlung kristallisieren lassen. Es scheiden sich feine Kristalle aus der Zusam- mensetzung C13 H17 -'"#3 0)2 - Caj2 # 4 H2 O. 4. 46,2 Teile i-Phenyl-2, 3-dimethyl-4-di- methylamino-5-pyrazolon und 29,4 Teile Cal- ciuunjodid werden in i 5o Teilen Wasser heiß gelöst und im Vakuum auf dem Wasserbad zur Trockne gedampft. Ist die Lösung weitgehend eingeengt, so leitet man durch Impfen die Kristallisation ein und dampft ,.dö##llständig zur Trockne. Es hinterbleibt der @g4eiche Stoff wie unter 3.2. 46.2 parts of i-phenyl-2, 3-dimethyl-q.-dimethyla.m.ino-5-pyrazolone and 19.9 parts of calcium bromide are dissolved in zoo parts of hot water and placed on a water bath in vacuo steamed to dryness. The residue is recrystallized from acetone, with the get the same complex salt: 'as u, rt ter i. 3. 10 parts of i-phenyl-2,, yl-4-A methylamino-5-pyrazolone and 8 Ca: cium, - '" iodide is dissolved in io parts of water and let crystallize with ice cooling. It fine crystals separate from the composition C13 H17 - '"# 3 0 ) 2 - Caj2 # 4 H2 O. 4. 46.2 parts of i-phenyl-2,3-dimethyl-4-di- methylamino-5-pyrazolone and 29.4 parts of Cal- ciuunjodid get hot in 15o parts of water dissolved and evaporated to dryness in vacuo on a water bath. If the solution is largely concentrated, the crystallization is initiated by seeding and the mixture is evaporated to dryness. The same substance remains as under 3.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von wasserlöslichen Abkömmlingen des i-Phenyl-2,3-dimethyl-4-dimethylamino-5-pyrazolons, dadurch gekennzeichnet, daß man dieses mit Calciumbromid oder Calciumjodid bei Gegenwart von Wasser oder organischen Lösungsmitteln zu Komplexsalzen umsetzt.PATENT CLAIM: Process for the preparation of water-soluble descendants of i-phenyl-2,3-dimethyl-4-dimethylamino-5-pyrazolons, characterized in that that this with calcium bromide or calcium iodide in the presence of water or converts organic solvents to complex salts.
DEK130262D 1933-05-27 1933-05-27 Process for the preparation of water-soluble particles of 1-phenyl-2, 3-dimethyl-4-dimethylamino-5-pyrazolone Expired DE660176C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK130262D DE660176C (en) 1933-05-27 1933-05-27 Process for the preparation of water-soluble particles of 1-phenyl-2, 3-dimethyl-4-dimethylamino-5-pyrazolone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK130262D DE660176C (en) 1933-05-27 1933-05-27 Process for the preparation of water-soluble particles of 1-phenyl-2, 3-dimethyl-4-dimethylamino-5-pyrazolone

Publications (1)

Publication Number Publication Date
DE660176C true DE660176C (en) 1938-05-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DEK130262D Expired DE660176C (en) 1933-05-27 1933-05-27 Process for the preparation of water-soluble particles of 1-phenyl-2, 3-dimethyl-4-dimethylamino-5-pyrazolone

Country Status (1)

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DE (1) DE660176C (en)

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