CH268686A - Process for the preparation of a new imidazoline. - Google Patents
Process for the preparation of a new imidazoline.Info
- Publication number
- CH268686A CH268686A CH268686DA CH268686A CH 268686 A CH268686 A CH 268686A CH 268686D A CH268686D A CH 268686DA CH 268686 A CH268686 A CH 268686A
- Authority
- CH
- Switzerland
- Prior art keywords
- imidazoline
- phenyl
- new
- methyl
- oxy
- Prior art date
Links
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical compound C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 title claims description 7
- 238000000034 method Methods 0.000 title claims description 6
- 238000002360 preparation method Methods 0.000 title claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical class Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 11
- 125000000590 4-methylphenyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1*)C([H])([H])[H] 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 239000000155 melt Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 230000002889 sympathetic effect Effects 0.000 claims description 2
- YFBPRBZDQSMTKG-UHFFFAOYSA-N 2-(chloromethyl)-4,5-dihydroimidazole Chemical compound ClCC1=NCCN1 YFBPRBZDQSMTKG-UHFFFAOYSA-N 0.000 claims 1
- 230000001419 dependent effect Effects 0.000 claims 1
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 21
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- GHCCHMFFNHOXEU-UHFFFAOYSA-N 2-(chloromethyl)-4,5-dihydro-1H-imidazole hydrochloride Chemical compound Cl.ClCC1=NCCN1 GHCCHMFFNHOXEU-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 150000007522 mineralic acids Chemical class 0.000 description 2
- 239000012452 mother liquor Substances 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 235000005985 organic acids Nutrition 0.000 description 2
- LBLYYCQCTBFVLH-UHFFFAOYSA-N 2-Methylbenzenesulfonic acid Chemical compound CC1=CC=CC=C1S(O)(=O)=O LBLYYCQCTBFVLH-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 125000004202 aminomethyl group Chemical group [H]N([H])C([H])([H])* 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000006286 aqueous extract Substances 0.000 description 1
- -1 aryl sulfonic acids Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000012433 hydrogen halide Substances 0.000 description 1
- 229910000039 hydrogen halide Inorganic materials 0.000 description 1
- 229940098779 methanesulfonic acid Drugs 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Description
Verfahren zur Herstellung eines neuen Imidazolins. Gegenstand des vorliegenden Patentes ist ein Verfahren zur Herstellung eines neuen Imidazolins, dadurch gekennzeichnet, dass man eine Verbindung der Formel
EMI0001.0004
worin Y einen bei der Reaktion sich abspal tenden Rest. bedeutet, z. B. ein Ester von 2- OY,--methyl-imidazolin mit starken anorgani schen oder organischen Säuren, wie z. B.
Ha logenwasserstoffsäuren, Alkyl- oder Arylsul- fonsäuren, auf N-(p-Methyl-phenyl)-m'-oxy- phenyl-amin einwirken lässt.
Die genannte Umsetzung kann in An- oder Abwesenheit von Verdünnungs- und/oder Kon densationsmitteln durchgeführt. werden.
Das erhaltene 2-[N-(p-Methyl-phenyl)-N- (m'-oxy-phenyl)-amino-methyl]-imidazolin ist neu. Es schmilzt bei 174 bis 175 und bildet leicht Salze mit anorganischen oder organi schen Säuren, z. B. mit Halogenwasserstoff- säure, wie der Salzsäure, mit. Schwefelsäure, Phosphorsäure, Methansulfosäure oder To- luolsulfosäure, Essigsäure und dergleichen, so z. B. ein salzsaures Salz vom Schmelzpunkt 239 bis 240 .
Das neue Imidazolin zeigt sympathico- lyt.ische Wirkung und soll als Heilmittel Ver wendung finden. Beispiel <I>1:</I> 199.24 Gewichtsteile N-(p-Methyl-phenyl)- m'-oxy-phenyl-amin und 77,52 Gewichtsteile 2-Chlormethy 1-imidazolin-hy drochlorid werden 16 Stunden unter Rühren und Überleiten eines Stickstoffstromes im Ölbad von 150 erhitzt. Der dickflüssige Kolbeninhalt wird dann auf etwa 100 abgekühlt, mit 400 Volumteilen heissem Wasser versetzt und einige Zeit ge rührt.
Nach weiterem Abkühlen auf etwa 60 gibt man 200 Volumteile Wasser und 500 Volumteile Essigester von 60 zu und trennt die wässrige Schicht ab. Aus dem Essigester lässt sich das überschüssige Ausgangsmaterial regenerieren.
Der wässrige Anteil wird im Kühlschrank bei -10 ausgefroren, wodurch das Hydro chlorid des 2- [ N- (p-Alethyl-phenyl) -N- (m'-oxy - phenyl)-aminomet.hyl]-imidazolins der Formel
EMI0001.0043
auskristallisiert. Die Mutterlauge liefert nach Einengen und Kühlen noch mehr Hydro- chlorid. Die vereinigten Hydrochloridmengen werden mit wenig kaltem Wasser behandelt, trocken gesogen und mit Essigester gewaschen.
Anschliessend kristallisiert man aus Alkohol- Essigester um und erhält so ein Hydrochlorid vom Schmelzpunkt 239 bis 240 .
Aus der wässrigen Lösung des Hydrochlo- rids lässt sich mit verdünntem Ammoniak die Base gewinnen, die, aus verdünntem Alkohol umkristallisiert, den Schmelzpunkt 174 bis 175 zeigt.
<I>Beispiel 2:</I> 39,84 Gewichtsteile N-(p-methyl-phenyl)- m'-oxy-phenyl-amin und 15,50 Gewichtsteile 2-Chlormethyl-imidazolin-hydrochlorid werden in 75 Volumteilen absolutem Alkohol 12 Stun den im geschlossenen Gefäss auf 130 bis 140 erhitzt. Nach dem Abkühlen wird abfiltrier t, die Mutterlauge unter vermindertem Druck eingeengt und der Rückstand mit Essigester und Wasser ausgeschüttelt.
Aus dem wäss- rigen Auszug gewinnt man, wie in Beispiel 1 beschrieben, das Hydrochlorid des 2-[N-(p- Methyl-phenyl) -IN'- (m'-oxy -phenyl) -amino- methyl]-imidazolins, das nach dem Umkri- stallisieren aus Alkohol-Essigester bei 239 bis 240 schmilzt.
<I>Beispiel 3:</I> 39,84 Gewichtsteile N-(p-1lethyl-phenyl)- m'-oxy-phenyl-amin und 15,50 Gewichtsteile 2-Chlormethyl-imidazolin-hyclrochlorid werden in 100 Volumteilen n-Butylalkohol unter Rühren während 15 Stunden zum Sieden er hitzt. Nach dem Erkalten wird die Butyl- alkohollösung filtriert und im Vakuum zur Trockne verdampft.
Darauf nimmt man den Rückstand in Wasser und Essigester auf und gewinnt aus der wässrigen Lösung, wie in Bei- spiel 1 beschrieben, das Hydrochlorid des 2- [N- (p-Methyl-phenyl) - N- (m'- oxyphenyl)- aminomethyl]-imidazolins als Kristalle vom Schmelzpunkt 239 bis 240 .
Process for the preparation of a new imidazoline. The present patent relates to a process for the preparation of a new imidazoline, characterized in that a compound of the formula
EMI0001.0004
where Y is a residue that splits off in the reaction, e.g. B. an ester of 2-OY, - methyl-imidazoline with strong inorganic or organic acids, such as. B.
Hydrogen halide acids, alkyl or aryl sulfonic acids, can act on N- (p-methyl-phenyl) -m'-oxy-phenyl-amine.
The reaction mentioned can be carried out in the presence or absence of diluents and / or condensation agents. will.
The 2- [N- (p-methyl-phenyl) -N- (m'-oxy-phenyl) -amino-methyl] -imidazoline obtained is new. It melts at 174 to 175 and easily forms salts with inorganic or organic acids rule, e.g. B. with hydrohalic acid, such as hydrochloric acid, with. Sulfuric acid, phosphoric acid, methanesulfonic acid or toluenesulfonic acid, acetic acid and the like, so for. B. a hydrochloric acid salt with a melting point of 239 to 240.
The new imidazoline has a sympathetic effect and is said to be used as a remedy. Example <I> 1: </I> 199.24 parts by weight of N- (p-methyl-phenyl) -m'-oxy-phenyl-amine and 77.52 parts by weight of 2-chloromethyl 1-imidazoline hydrochloride are stirred for 16 hours Passing a stream of nitrogen in an oil bath of 150 heated. The viscous contents of the flask are then cooled to about 100, mixed with 400 parts by volume of hot water and stirred for some time.
After cooling further to about 60, 200 parts by volume of water and 500 parts by volume of ethyl acetate of 60 are added and the aqueous layer is separated off. The excess starting material can be regenerated from the ethyl acetate.
The aqueous portion is frozen out in the refrigerator at -10, whereby the hydrochloride of 2- [N- (p-Alethyl-phenyl) -N- (m'-oxy - phenyl) -aminomet.hyl] -imidazoline of the formula
EMI0001.0043
crystallized out. After concentration and cooling, the mother liquor supplies even more hydrochloride. The combined amounts of hydrochloride are treated with a little cold water, sucked dry and washed with ethyl acetate.
It is then recrystallized from alcohol / ethyl acetate and a hydrochloride with a melting point of 239 to 240 is obtained.
The base, which, recrystallized from dilute alcohol, has a melting point of 174 to 175, can be obtained from the aqueous solution of the hydrochloride with dilute ammonia.
<I> Example 2: </I> 39.84 parts by weight of N- (p-methyl-phenyl) -m'-oxy-phenyl-amine and 15.50 parts by weight of 2-chloromethyl-imidazoline hydrochloride are dissolved in 75 parts by volume of absolute alcohol Heated to 130 to 140 hours in a closed vessel for 12 hours. After cooling, it is filtered off, the mother liquor is concentrated under reduced pressure and the residue is extracted by shaking with ethyl acetate and water.
As described in Example 1, the hydrochloride of 2- [N- (p-methyl-phenyl) -IN'- (m'-oxy-phenyl) -amino-methyl] -imidazoline is obtained from the aqueous extract, which melts at 239 to 240 after recrystallization from alcohol / ethyl acetate.
<I> Example 3: </I> 39.84 parts by weight of N- (p-1lethyl-phenyl) -m'-oxy-phenyl-amine and 15.50 parts by weight of 2-chloromethyl-imidazoline-hydrochloride are added in 100 parts by volume of n- Butyl alcohol is heated to the boil for 15 hours while stirring. After cooling, the butyl alcohol solution is filtered and evaporated to dryness in vacuo.
The residue is then taken up in water and ethyl acetate and the hydrochloride of 2- [N- (p-methylphenyl) - N- (m'-oxyphenyl) - is obtained from the aqueous solution, as described in Example 1. aminomethyl] imidazoline as crystals with a melting point of 239 to 240.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH268686T | 1947-01-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH268686A true CH268686A (en) | 1950-05-31 |
Family
ID=4476965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH268686D CH268686A (en) | 1947-01-31 | 1947-01-31 | Process for the preparation of a new imidazoline. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH268686A (en) |
-
1947
- 1947-01-31 CH CH268686D patent/CH268686A/en unknown
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