CH105135A - Process for the preparation of a p-dialkylaminoarylphosphinous acid. - Google Patents
Process for the preparation of a p-dialkylaminoarylphosphinous acid.Info
- Publication number
- CH105135A CH105135A CH105135DA CH105135A CH 105135 A CH105135 A CH 105135A CH 105135D A CH105135D A CH 105135DA CH 105135 A CH105135 A CH 105135A
- Authority
- CH
- Switzerland
- Prior art keywords
- sep
- acid
- water
- alcohol
- soluble
- Prior art date
Links
- 239000002253 acid Substances 0.000 title claims description 6
- 238000000034 method Methods 0.000 title claims description 6
- 238000002360 preparation method Methods 0.000 title description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 7
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 3
- FAIAAWCVCHQXDN-UHFFFAOYSA-N phosphorus trichloride Chemical compound ClP(Cl)Cl FAIAAWCVCHQXDN-UHFFFAOYSA-N 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 150000001879 copper Chemical class 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 159000000000 sodium salts Chemical class 0.000 claims description 2
- 159000000007 calcium salts Chemical class 0.000 claims 1
- 230000037213 diet Effects 0.000 claims 1
- 235000005911 diet Nutrition 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- YNPNZTXNASCQKK-UHFFFAOYSA-N Phenanthrene Natural products C1=CC=C2C3=CC=CC=C3C=CC2=C1 YNPNZTXNASCQKK-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- DGEZNRSVGBDHLK-UHFFFAOYSA-N [1,10]phenanthroline Chemical compound C1=CN=C2C3=NC=CC=C3C=CC2=C1 DGEZNRSVGBDHLK-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- CIPVVROJHKLHJI-UHFFFAOYSA-N n,n-diethyl-3-methylaniline Chemical compound CCN(CC)C1=CC=CC(C)=C1 CIPVVROJHKLHJI-UHFFFAOYSA-N 0.000 description 1
- 239000000825 pharmaceutical preparation Substances 0.000 description 1
- RYIOLWQRQXDECZ-UHFFFAOYSA-N phosphinous acid Chemical compound PO RYIOLWQRQXDECZ-UHFFFAOYSA-N 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/28—Phosphorus compounds with one or more P—C bonds
- C07F9/46—Phosphinous acids [R2POH], [R2P(= O)H]: Thiophosphinous acids including[R2PSH]; [R2P(=S)H]; Aminophosphines [R2PNH2]; Derivatives thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
Description
Verfahren zur Darstellung einer p-dialhylaminoarylphosphinigen Säure. Das von Micliaelis (Ann. <B>260,</B> 2 ff.) be schriebene Verfahren zur Darstellung von p-.diall.:#ylaminoarylphosphinigen Säuren bezw. ihren Chloriden besteht darin, dass man Di- alkylaniline mit einem grossen tberschuss von Phosphortrichlorid bei Gegenwart von Alu- ininiunichlorid behandelt.
Das entstehende Dialkylaminop.hosphenylclilorid wird dann nach verschiedenen Methoden in die Säure übergeführt.
Das Verfahren ist im technischen Mass- stabe schon deshalb nicht durchführbar, weil die Reaktion fast explosionsartig verläuft. Um sie zu Ende zu führen, muss trotzdem viele Stunden lang nachher noch auf dem Sandbade erhitzt werden. Die Reinigung ist ausserordentlich umständlich und verlustreich, die Ausbeuten sind dementsprechend schlecht.
Es wurde nun die überraschende Beob achtung gemacht, dass man die bisher unbe kannte phenyl -1- diäthylamino-3-methyl - 4- phosphinige Säure in vorzüglicher Reinheit und nahezu theoretischer Ausbeute erhält, wenn man ain besten in einen Überschuss von 1)iiithylmetei-toluidin Phosphortrichlorid, zweckmässig bei Wasserbadtemperatur,
ein fliessen lässt und dann das entstehende Aryl- pliosphorchlorür mit verseifenden Mitteln in üblicher Weise in die phosphinige Säure über führt. Man kann dies beispielsweise mit ver dünnter Natronlauge durchführen. Die neue Verbindung besitzt wertvolle therapeutische l','igenschaften; auch soll sie als Ausgangs stoff für die Herstellung anderer pharma zeutischer Präparate dienen.
Beispiel: Phen <I>y</I> l-l -diiithy lanaino-3-rneth yl-4-phos- phinigsazcres Natrium.
33 kg Diäthyl-m-toluiclin werden auf<B>75'</B> erwärmt und unter Rühren mit 1-1 kg auf <B>50'</B> erwärmtem Phosphortrichlorid versetzt. Nach kurzer Zeit steigt die Temperatur des Gemisches auf 133 und fällt dann wieder. Es wird so lange gerührt, bis die Innentempe ratur auf<B>75'</B> gefallen ist.
Das Reak#tionspro- dukt wird in 40 Liter Natronlauge von 40' B6 und 100 kg Eia eingerührt, das über schüssige Diäthyl-m-toluidin mit Wasser dampf übergetrieben und die alkalische Lö-
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Process for the preparation of a p-dialhylaminoarylphosphinous acid. The by Micliaelis (Ann. <B> 260, </B> 2 ff.) Be written process for the preparation of p-.diall.:#ylaminoarylphosphinigen acids respectively. Their chlorides consists in treating dialkylanilines with a large excess of phosphorus trichloride in the presence of aluminum chloride.
The resulting Dialkylaminop.hosphenylclilorid is then converted into the acid by various methods.
The process cannot be carried out on an industrial scale because the reaction is almost explosive. In order to complete it, you still have to heat it on the sand bath for many hours afterwards. The purification is extremely laborious and lossy, and the yields are accordingly poor.
The surprising observation has now been made that the hitherto unknown phenyl-1-diethylamino-3-methyl-4-phosphinous acid is obtained in excellent purity and almost theoretical yield, if at best one in an excess of 1) iiithylmetei- toluidine phosphorus trichloride, useful at water bath temperature,
one lets flow and then the resulting arylpliosphorochloride is converted into the phosphinous acid with saponifying agents in the usual way. You can do this, for example, with dilute sodium hydroxide solution. The new compound possesses valuable therapeutic properties; It is also intended to serve as a starting material for the manufacture of other pharmaceutical preparations.
Example: Phen <I> y </I> l-l -diiithy lanaino-3-rneth yl-4-phos- phinigsazcres sodium.
33 kg of diethyl-m-toluicline are heated to <B> 75 '</B> and 1-1 kg of phosphorus trichloride heated to <B> 50' are added while stirring. After a short time the temperature of the mixture rises to 133 and then falls again. It is stirred until the internal temperature has fallen to <B> 75 '</B>.
The reaction product is stirred into 40 liters of 40 liter sodium hydroxide solution and 100 kg of egg, the excess diethyl-m-toluidine is driven over with steam and the alkaline solution
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<tb> greenish yellow <SEP> powder, <SEP> which <SEP> is <SEP> insoluble in <SEP> water <SEP>, <SEP> is slightly <SEP> soluble in <SEP> alcohol <SEP>.
<SEP> The <SEP> lime salt <SEP> 1 is <SEP> <SEP> from <SEP> alcohol <SEP> or <SEP> ethyl acetate
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Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH105135T | 1923-04-12 | ||
CH104792T | 1923-04-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH105135A true CH105135A (en) | 1924-06-02 |
Family
ID=25706731
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH105135D CH105135A (en) | 1923-04-12 | 1923-04-12 | Process for the preparation of a p-dialkylaminoarylphosphinous acid. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH105135A (en) |
-
1923
- 1923-04-12 CH CH105135D patent/CH105135A/en unknown
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