CH220211A - Process for the preparation of organic phosphinous acids. - Google Patents
Process for the preparation of organic phosphinous acids.Info
- Publication number
- CH220211A CH220211A CH220211DA CH220211A CH 220211 A CH220211 A CH 220211A CH 220211D A CH220211D A CH 220211DA CH 220211 A CH220211 A CH 220211A
- Authority
- CH
- Switzerland
- Prior art keywords
- preparation
- phosphinous acids
- acid
- hypophosphorous acid
- organic
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 6
- RYIOLWQRQXDECZ-UHFFFAOYSA-N phosphinous acid Chemical class PO RYIOLWQRQXDECZ-UHFFFAOYSA-N 0.000 title claims description 6
- 238000002360 preparation method Methods 0.000 title description 5
- ACVYVLVWPXVTIT-UHFFFAOYSA-N phosphinic acid Chemical compound O[PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-N 0.000 claims description 8
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 claims 1
- 239000002253 acid Substances 0.000 description 6
- 159000000000 sodium salts Chemical class 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 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 2
- HUMNYLRZRPPJDN-UHFFFAOYSA-N benzaldehyde Chemical compound O=CC1=CC=CC=C1 HUMNYLRZRPPJDN-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000008855 peristalsis Effects 0.000 description 2
- 239000012266 salt solution Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 241000699670 Mus sp. Species 0.000 description 1
- 206010033799 Paralysis Diseases 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- IZALUMVGBVKPJD-UHFFFAOYSA-N benzene-1,3-dicarbaldehyde Chemical compound O=CC1=CC=CC(C=O)=C1 IZALUMVGBVKPJD-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- GQZXNSPRSGFJLY-UHFFFAOYSA-N hydroxyphosphanone Chemical compound OP=O GQZXNSPRSGFJLY-UHFFFAOYSA-N 0.000 description 1
- 229940046817 hypophosphorus acid Drugs 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- -1 oxymethylene camphor Chemical class 0.000 description 1
- QNGNSVIICDLXHT-UHFFFAOYSA-N para-ethylbenzaldehyde Natural products CCC1=CC=C(C=O)C=C1 QNGNSVIICDLXHT-UHFFFAOYSA-N 0.000 description 1
- 150000003003 phosphines Chemical class 0.000 description 1
- 230000001256 tonic 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
- C07F9/30—Phosphinic acids [R2P(=O)(OH)]; Thiophosphinic acids ; [R2P(=X1)(X2H) (X1, X2 are each independently O, S or Se)]
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 von organischen phosphinigen Säuren. Die Darstellung von organischen phosphi- nigen Säuren durch Einwirkung von unter- phosphoriger Säure auf Oxoverbindungen, ins besondere Aldehyde ist bekannt.
Nach sämtlichen Literaturangaben wird jedoch mit einem bedeutenden Überschuss an unterphosphoriger Säure gearbeitet, um zu friedenstellende Ausbeuten zu erhalten und die Bildung von unerwünschten Nebenproduk ten auszuschalten. Ausser dieser äusserst un wirtschaftlichen Verwendung eines Überschus ses an unterphosphoriger Säure wird nach der Literatur die Reaktion zudem in ziemlich grosser Verdünnung bei mindestens 90-95 C ausgeführt.
Die Bereitung der reinen phos- phinigen Säuren, beziehungsweise deren reinen Salzen nach den Angaben der Literatur ist sehr umständlich und kostspielig, da sie über schwerlösliches Metallsalz geschieht, das dann wieder mit Hilfe von Schwefelwasserstoff zer legt werden muss.
Es ist nun gefunden worden, dass man ohne Anwendung eines Überschusses an unter- phosphoriger Säure die Reaktion praktisch quantitativ durchführen kann, wenn man bei maximal<B>60',</B> vorzugsweise zwischen 50 und 55', gegebenenfalls in konzentrierter Lösung arbeitet. Es hat sich gezeigt, dass sich die Reindarstellung der phosphinigen Säuren da durch bedeutend vereinfacht.
Die auf diese Weise hergestellten organi schen phosphinigen Säuren können mannig fache Verwendung sowohl als Zwischenpro dukte als auch als Arzneimittel finden. So kann zum Beispiel die a-oxybenzylphosphi- nige Säure, beziehungsweise deren Salze therapeutische Verwendung finden, da sich auf Grund zahlreicher physiologischer Versuche ergeben hat, dass diese Verbindung die wert vollen Eigenschaften eines kräftig wirkenden Tonikums aufweist.
So zeigte bei Versuchen an überlebenden Organen das Froschherz, das in Ringerlösung kontinuierlich an Schlagzahl und Schlagintensität nachliess, eine jeweilige Unterbrechung des Abstieges bei Zusatz einer stark verdünnten Lösung von oxybenzylphos- phinigsaurem Natrium. Noch instruktiver ist die Wirkung bei der Peristaltik von eben ge- töteten weissen Mäusen, die mit geöffnetem Abdomen in 3611 C warmer sauerstoffdurch- strömter Ringerlösung eingebracht waren.
Die Peristaltik, die nach einigen Stunden er lahmte, setzte jeweils nach Zusatz einiger ein:' einer 2-4prozentigen Lösung von oxybenzyl- phosphinigsaurem Natrium wiederum stark ein.
Das Verfahren gemäss der Erfindung soll an folgenden Beispielen erleuchtet werden. Beispiel <I>1:</I> 16 Teile Benzaldehy d und<B>12,5</B> Teile einer 80prozentigen unterphosphorigen Säure wer den unter Rühren und zeitweiligem Kühlen während mehreren Stunden zwischen 50 und <B>60'</B> C aufeinander einwirken gelassen. Es entsteht ein dicker, zäher Brei, der nach völligem Erkalten in Wasser aufgenommen und z. B. mit Natriumkarbonat neutralisiert wird.
Die so erhaltene Natriumsalzlösung kann nach Filtrieren im Vakuum zur Kristallisation eingedampft werden, wobei das Natriumsalz der a-oxybenzy lphospliinigen Säure in prak tisch quantitativer Ausbeute in reinem Zu stande erhalten wird. Zur Herstellung der reinen Säure kann das rohe Reaktionsprodukt in Azeton gelöst und dann durch Zusatz von Benzol in reiner Form auskristallisiert werden. Dran erhält so die a-oxybenzylphospliinige Säure in farblosen Kristallplättchen mit einem Schmelzpunkt von 107-108'. Sie sind in Wasser und Alkohol leicht löslich, in Äther unlöslich.
Beispiel <I>2:</I> 40,2 Teile Isophthalaldehyd werden finit 48 Teilen einer 82prozentigen unterphosplio- rigen Säure bei gewöhnlicher Temperatur zu sammengebracht und hernaeli unter Rühren bei<B>50-55'</B> aufeinander einwirken gelassen. Nach dem Erkalten wird z. B. in Wasser auf genommen und mit Natriumkarbonat genau neutralisiert.
Die Natriumsalzlösung kann nach dem Filtrieren unter vermindertem Druck eingedampft werden, wobei das Natriumsalz als weisse, kristalline, in Wasser leicht lösliche Substanz erhalten wird.
Beispiel <I>3:</I> 32 Teile Oxymethylenkampfer werden mit 32 Teilen einer 82 prozentigen unterphospho- rigen Säure während mehrerer Stunden bei 50-551 aufeinander einwirken gelassen und nachher aufgearbeitet wie in Beispiel 1.
Man erhält in praktisch quantitativer Aus beute das Natriumsalz der oxykampferphos- pliinIgen Säure als weisse, kristalline Sub stanz, die in Wasser mässig, in Alkohol ziem lich leicht löslich ist.
Process for the preparation of organic phosphinous acids. The preparation of organic phosphine acids by the action of hypophosphorous acid on oxo compounds, in particular aldehydes, is known.
According to all the literature, however, a significant excess of hypophosphorous acid is used in order to obtain satisfactory yields and to eliminate the formation of undesired by-products. In addition to this extremely uneconomical use of an excess of hypophosphorous acid, according to the literature, the reaction is also carried out in a fairly large dilution at at least 90-95 ° C.
The preparation of the pure phosphinous acids or their pure salts according to the information in the literature is very laborious and expensive, since it is done using a sparingly soluble metal salt, which then has to be broken down again with the aid of hydrogen sulphide.
It has now been found that the reaction can be carried out practically quantitatively without using an excess of hypophosphorous acid if one works at a maximum of 60 ', preferably between 50 and 55', optionally in concentrated solution . It has been shown that the pure preparation of the phosphinous acids is thereby considerably simplified.
The organic phosphinous acids produced in this way can find various uses both as intermediate products and as drugs. For example, the a-oxybenzylphosphine acid or its salts can be used therapeutically, as numerous physiological tests have shown that this compound has the valuable properties of a powerful tonic.
In experiments on surviving organs, for example, the frog heart, which continuously decreased in number of beats and beat intensity in Ringer's solution, showed an interruption of the descent when a very dilute solution of sodium oxybenzylphosphine was added. The effect of peristalsis in white mice that had just been killed and that with their abdomen opened was placed in Ringer's solution at 3611 ° C is even more instructive.
The peristalsis, which became paralyzed after a few hours, set in again after adding a few: 'A 2-4 per cent solution of sodium oxybenzylphosphinic acid.
The method according to the invention will be illustrated by the following examples. Example <I> 1: </I> 16 parts of benzaldehyde and <B> 12.5 </B> parts of an 80 percent hypophosphorous acid are mixed with stirring and temporary cooling for several hours between 50 and 60 '</ B> C allowed to interact. The result is a thick, viscous pulp, which is absorbed in water after it has cooled completely and z. B. is neutralized with sodium carbonate.
The sodium salt solution obtained in this way can, after filtration, be evaporated for crystallization in vacuo, the sodium salt of the a-oxybenzy lphosphorous acid being obtained in the pure state in practically quantitative yield. To produce the pure acid, the crude reaction product can be dissolved in acetone and then crystallized out in pure form by adding benzene. The α-oxybenzylphosphorous acid is then obtained in colorless crystal flakes with a melting point of 107-108 '. They are easily soluble in water and alcohol, insoluble in ether.
Example <I> 2: </I> 40.2 parts of isophthalaldehyde are finite 48 parts of an 82 percent hypophosphorus acid brought together at ordinary temperature and then allowed to act on one another while stirring at <B> 50-55 '</B>. After cooling, z. B. in water and exactly neutralized with sodium carbonate.
After filtering, the sodium salt solution can be evaporated under reduced pressure, the sodium salt being obtained as a white, crystalline substance which is readily soluble in water.
Example <I> 3: </I> 32 parts of oxymethylene camphor are allowed to act on one another with 32 parts of an 82 percent hypophosphorous acid for several hours at 50-551 and then worked up as in Example 1.
The sodium salt of oxycampferophosphorus acid is obtained in practically quantitative yield as a white, crystalline substance which is moderately soluble in water and fairly easily soluble in alcohol.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH220211T | 1940-10-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH220211A true CH220211A (en) | 1942-03-31 |
Family
ID=4451535
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH220211D CH220211A (en) | 1940-10-28 | 1940-10-28 | Process for the preparation of organic phosphinous acids. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH220211A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1005063B (en) * | 1955-02-12 | 1957-03-28 | Hoechst Ag | Process for the preparation of ª ‡ -oxy-1,2,5,6-tetrahydrobenzyl-phosphinous acid or its alkali metal salts |
-
1940
- 1940-10-28 CH CH220211D patent/CH220211A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1005063B (en) * | 1955-02-12 | 1957-03-28 | Hoechst Ag | Process for the preparation of ª ‡ -oxy-1,2,5,6-tetrahydrobenzyl-phosphinous acid or its alkali metal salts |
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