CH268459A - Process for the preparation of a basic ester. - Google Patents
Process for the preparation of a basic ester.Info
- Publication number
- CH268459A CH268459A CH268459DA CH268459A CH 268459 A CH268459 A CH 268459A CH 268459D A CH268459D A CH 268459DA CH 268459 A CH268459 A CH 268459A
- Authority
- CH
- Switzerland
- Prior art keywords
- ester
- acetic acid
- act
- propyl
- ethyl
- Prior art date
Links
- 150000002148 esters Chemical class 0.000 title claims description 9
- 238000000034 method Methods 0.000 title claims description 8
- 238000002360 preparation method Methods 0.000 title claims description 4
- MADORZDTLHDDEN-UHFFFAOYSA-N 1-piperidin-1-ylethanol Chemical compound CC(O)N1CCCCC1 MADORZDTLHDDEN-UHFFFAOYSA-N 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- 238000009835 boiling Methods 0.000 claims description 2
- 150000007522 mineralic acids Chemical class 0.000 claims description 2
- 150000007524 organic acids Chemical class 0.000 claims description 2
- 235000005985 organic acids Nutrition 0.000 claims description 2
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 2
- 230000001225 therapeutic effect Effects 0.000 claims description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-N acetic acid Substances CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims 2
- KTHXOYWHJBTQNC-UHFFFAOYSA-N 2-methyl-2-propylpentanoic acid Chemical compound CCCC(C)(C(O)=O)CCC KTHXOYWHJBTQNC-UHFFFAOYSA-N 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- -1 piperidinoethyl ester Chemical class 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- NGNBDVOYPDDBFK-UHFFFAOYSA-N 2-[2,4-di(pentan-2-yl)phenoxy]acetyl chloride Chemical compound CCCC(C)C1=CC=C(OCC(Cl)=O)C(C(C)CCC)=C1 NGNBDVOYPDDBFK-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 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
- 239000002253 acid Substances 0.000 description 1
- 150000001414 amino alcohols Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Hydrogenated Pyridines (AREA)
Description
Verfahren zur Herstellung eines basischen Esters. Gegenstand vorliegenden Patentes ist ein Verfahren zur Herstellung eines basischen Esters. Das Verfahren ist dadurch gekenn zeichnet, dass man eine Verbindung der Formel
EMI0001.0004
worin X und Y zwei, mit Ausnahme eines in einem von ihnen enthaltenen Sauerstoff atoms, sich bei der Reaktion abspaltende Reste bedeuten, einwirken lässt.
Die neue Verbindung der Piperidinoäthyl- ester der Metliyl-di-n-propyl-essigsäure ist. eine Base vom Siedepunkt 154--156 unter 11 mm Druck. Sie lässt sich mit anorgani schen oder organischen Säuren in Salze über führen. Sie soll therapeutische Verwendung finden.
Beispiel: 17,7 Teile Metliyl-cli-n-propyl-essigsäure- chlorid werden unter Rühren zu 12,9 Teilen Piperidinoäthanol gegeben, wobei Erwärmung eintritt und das Gemisch hierauf unter Rühren auf 18011 erhitzt, bis eine homogene Schmelze entstanden ist.
Diese wird vorteil- haft noch warm unter Zusatz von wenig ver dünnter Salzsäure in Wasser gelöst und die wässrige Lösung einige Male ausgeäthert. Hierauf wird mit konzentriertem Ammoniak die Base freigemacht und in Äther auf- -enommen. mach einmaligem Waschen der ätheriseben Lösung mit -Wasser und Trocknen wird das Lösungsmittel abdestilliert und der als Rückstand erhaltene Basisehe Ester durch Destillation im Vakuum gereinigt.
Dieser sie- clet bei 154-156 unter 11 mm Druck.
Die Reaktion kann auch in einem Lö sungsmittel, wie Benzol, Toluol, Yylol, Chlor benzol usw., ausgeführt werden. Man erhält in diesem Fall oft. bessere Ausbeuten bei Ver wendung eines Überschusses an Aminoalkohol.
Statt des Säurechlorids kann man ein anderes Säurehalogenid oder das Anhydrid anwenden oder auch einen Ester der Carbon- säure, z. B. den Met.hyl-di-n-propyl-essigsäure- inethyAester mit Piperidinoäthanol in Gegen wart von Natriumalkoholat umsetzen, wobei vorteilhaft der entstehende Methylalkohol durch Destillation aus dem Reaktionsgemisch entfernt wird.
Zum gleichen Endprodukt gelangt man auch, wenn man die Methyl-di-n-propyl-essig- säure mit, einem Piperidinoäthylhalogenid er hitzt oder ein Salz der Met.hyl-di-n-propyl- essigsäure mit einem reaktionsfähigen Ester des Piperidinoäthanols oder einem Salz des selben umsetzt.
Process for the preparation of a basic ester. The present patent is a process for the preparation of a basic ester. The process is characterized in that a compound of the formula
EMI0001.0004
where X and Y two, with the exception of an oxygen atom contained in one of them, are radicals which are split off during the reaction, can act.
The new compound of the piperidinoethyl ester of methyl-di-n-propyl-acetic acid is. a base with a boiling point of 154-156 under 11 mm pressure. It can be converted into salts with inorganic or organic acids. It should find therapeutic use.
Example: 17.7 parts of methyl-cli-n-propyl-acetic acid chloride are added with stirring to 12.9 parts of piperidinoethanol, whereupon heating occurs and the mixture is then heated to 18011 with stirring until a homogeneous melt has formed.
This is advantageously dissolved in water while still warm with the addition of a little dilute hydrochloric acid and the aqueous solution is extracted with ether a few times. The base is then freed with concentrated ammonia and taken up in ether. After washing the ethereal solution once with water and drying, the solvent is distilled off and the base ester obtained as a residue is purified by distillation in vacuo.
This seals at 154-156 under 11 mm pressure.
The reaction can also be carried out in a solvent such as benzene, toluene, yylene, chlorobenzene, etc., can be carried out. One often gets in this case. better yields when using an excess of amino alcohol.
Instead of the acid chloride, another acid halide or the anhydride can be used, or an ester of carboxylic acid, e.g. B. implement the methyl-di-n-propyl-acetic acid inethyAester with piperidinoethanol in the presence of sodium alcoholate, the resulting methyl alcohol being advantageously removed from the reaction mixture by distillation.
The same end product is also obtained if the methyl-di-n-propyl-acetic acid is heated with a piperidinoethyl halide or a salt of the methyl-di-n-propyl acetic acid with a reactive ester of piperidinoethanol or a The salt of the same.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH261503T | 1943-08-04 | ||
| CH268459T | 1943-08-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH268459A true CH268459A (en) | 1950-05-15 |
Family
ID=25730479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH268459D CH268459A (en) | 1943-08-04 | 1943-08-04 | Process for the preparation of a basic ester. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH268459A (en) |
-
1943
- 1943-08-04 CH CH268459D patent/CH268459A/en unknown
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