DE913779C - Process for the preparation of an oxyphenyl-ethanolamine - Google Patents

Process for the preparation of an oxyphenyl-ethanolamine

Info

Publication number
DE913779C
DE913779C DEL2525D DEL0002525D DE913779C DE 913779 C DE913779 C DE 913779C DE L2525 D DEL2525 D DE L2525D DE L0002525 D DEL0002525 D DE L0002525D DE 913779 C DE913779 C DE 913779C
Authority
DE
Germany
Prior art keywords
oxyphenyl
ethanolamine
preparation
oxy
oxyphenylethanolamine
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
DEL2525D
Other languages
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.)
RUDOLF SACHS
Original Assignee
RUDOLF SACHS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by RUDOLF SACHS filed Critical RUDOLF SACHS
Application granted granted Critical
Publication of DE913779C publication Critical patent/DE913779C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C213/00Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton
    • C07C213/04Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton by reaction of ammonia or amines with olefin oxides or halohydrins
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C213/00Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C213/00Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton
    • C07C213/02Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton by reactions involving the formation of amino groups from compounds containing hydroxy groups or etherified or esterified hydroxy groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Verfahren zur Herstellung eines Oxyphenyl-äthanolamins Es ist bereits eine Reihe von Aminen vom Typus des Adrenalins bekannt, so z. B. das p-Oxyphenyläthanol-methylamin, das p-Oxyphenyl-äthanolamin sowie das m-Oxyphenyl-äthanol-methylamin. Die entsprechende Nor-Verbindung der letztgenannten Substanz, das m-Oxyphenyl-äthanolamin, wurde bisher in der Literatur noch nicht beschrieben. Gegenstand der vorliegenden Erfindung bildet ein Verfahren zur Herstellung dieses m-Oxyphenyl-äthanolamins, welches darin besteht, daß man m-Oxy-co-aminoacetophenon in an sich bekannter Weise, gegebenenfalls unter zeitweiser Blockierung der Oxy- bzw. Aminogruppe, mit Reduktionsmitteln behandelt.Process for the preparation of an oxyphenyl-ethanolamine It is already a number of amines of the adrenaline type are known, e.g. B. p-Oxyphenylethanol-methylamine, p-oxyphenyl-ethanolamine and m-oxyphenyl-ethanol-methylamine. The corresponding Nor-compound of the last-mentioned substance, the m-oxyphenyl-ethanolamine, was previously not yet described in the literature. Forms the subject of the present invention a process for the preparation of this m-oxyphenylethanolamine, which consists in that one m-oxy-co-aminoacetophenone in a manner known per se, optionally under temporary blocking of the oxy or amino group, treated with reducing agents.

Als Reduktionsmittel kommen solche in Frage, die geeignet sind, eine -CO-Gruppe in eine -C H O H-Gruppe überzuführen. Es sei hierbei verwiesen z. B. auf J. Houben, Die Methoden der organischen Chemie, III. Aufl., Bd. z, Kapitel über Reduktion, insbesondere S. 2q.5 ff. Besonders zweckmäßig sind die folgenden Reduktionsmittel: Wasserstoff in Gegenwart von edlen und unedlen Metallen, wie Palladium, Platin, Nickel, Cobalt, deren Gemische u. dgl.As the reducing agent, there are those that are suitable, a -CO group to be converted into a -C H O H group. It is referred here z. B. on J. Houben, The methods of organic chemistry, III. Ed., Vol. Z, chapter on Reduction, in particular p. 2q.5 ff. The following reducing agents are particularly useful: Hydrogen in the presence of noble and base metals such as palladium, platinum, Nickel, cobalt, their mixtures and the like.

Die erwähnte Blockierung der Oxy- bzw. Aminogruppe während der Reduktion kann z. B. durch Veresterung vorgenommen werden. Nach erfolgter Reduktion werden dann die Estergruppen verseift und so das freie m-Oxyphenyl-äthanolamin gewonnen. Statt der Veresterung kann natürlich die Blockierung auch auf andere Art erzielt werden. Man kann z. B. vom Benzyläther ausgehen und den Benzylrest nachträglich oder im Verlauf der Reduktion wieder abspalten. Das m-Oxyphenyl-äthanolamin soll therapeutische Verwendung finden. Gegenüber bereits bekannten Verbindungen ähnlicher Konstitution hat es den Vorzug der erheblich längeren Wirksamkeit. Zum Beispiel beträgt die gleich starke Blutdrucksteigerung am Kaninchen bei gleichen Versuchsbedingungen (intravenöse Applikation, I;'io letale Dosis) im Falle des p-Oxyphenyl-äthanol-methylamins g Minuten, des m-Oxyphenyl-äthanol-methylamins 5 bis 7 Minuten, wogegen diejenige des nach dem vorliegenden Verfahren erhältlichen m-Oxyphenyl-äthanolamins 27 Minuten dauert. Das ebenfalls bekannte p-Oxyphenyläthanolamin weist eine noch schwächere Blutdruckwirksamkeit als Tyramin auf (H e f f t e r , Handbuch der experimentellen Pharmakologie, I1;2, S. i288 ;19241), welches seinerseits schwächer wirkt als p-Oxyphenyl-äthanol-methylamin.The mentioned blocking of the oxy or amino group during the reduction can e.g. B. be made by esterification. After the reduction has taken place then the ester groups are saponified and the free m-oxyphenylethanolamine is obtained. Instead of the esterification, the blocking can of course also be achieved in another way will. You can z. B. proceed from the benzyl ether and subsequently add the benzyl residue or split off again in the course of the reduction. The m-oxyphenyl-ethanolamine should find therapeutic use. Compared to already known connections of a similar constitution, it has the advantage of being effective for a considerably longer period of time. To the Example is the equally strong increase in blood pressure in rabbits for the same Test conditions (intravenous administration, I; 'io lethal dose) in the case of p-oxyphenyl-ethanol-methylamine g minutes, the m-oxyphenyl-ethanol-methylamine 5 to 7 minutes, whereas the one of the m-oxyphenyl-ethanolamine obtainable by the present process 27 minutes take. The also known p-oxyphenylethanolamine has an even weaker one Blood pressure effectiveness than tyramine on (H e f t e r, Manual of the experimental Pharmacology, I1; 2, pp. I288; 19241), which in turn has a weaker effect than p-oxyphenyl-ethanol-methylamine.

Die Herstellung der neuen Verbindung wird durch die folgenden Beispiele erläutert. Beispiel i ioo Teile des Hydrochlorids des m-Oxy-(,)-aminoacetophenons vom F. 220 bis 222° (erhalten durch Bromieren von m-Acetoxy-acetophenon, Umsetzung des Bromketons mit Natriumjodid, Addition von Hexamethylen-tetramin an das jodid in einem indifferenten Lösungsmittel und Spaltung des Additionsproduktes in saurer Lösung) werden in wäßriger Lösung mit Wasserstoff in Gegenwart von 2 Teilen Palladiumkatalysator geschüttelt bis zur Aufnahme von 2 Atomen Wasserstoff. Hierauf wird vom Katalysator abfiltriert, das Filtrat im Vakuum eingedampft und der kristallinisch erstarrte und vollständig getrocknete Rückstand in absolutem Alkohol gelöst und mit trockenem Äther gefällt. Das so erhaltene Hydrochlorid des m-Oxyphenyl-äthanolamins bildet weiße Kristalle vom F. 159 bis 16o°. Beispiel 2 5o Teile m-Acetoxy-c)-acetaminoacetophenon (erhalten durch Acetylieren des im Beispiel i genannten m-Oxy-craminoacetophenons) werden in Essigester mit Wasserstoff in Gegenwart von 1o Teilen eines Nickelkatalysators im Autoklav unter Druck bei erhöhter Temperatur bis auf Aufnahme von 2 Atomen Wasserstoff hydriert. Hierauf wird vom Katalysator abfiltriert und das Lösungsmittel abgedampft. Aus dem Rückstand wird durch Umkristallisieren das m-Acetoxyphenyl-äthanolacetamin in reiner Form gewonnen.The preparation of the new compound is illustrated by the following examples explained. Example 100 parts of the hydrochloride of m-oxy - (,) - aminoacetophenone from 220 ° to 222 ° C. (obtained by bromination of m-acetoxy-acetophenone, conversion of bromine ketone with sodium iodide, addition of hexamethylene tetramine to the iodide in an inert solvent and cleavage of the addition product in acidic Solution) are in aqueous solution with hydrogen in the presence of 2 parts of palladium catalyst shaken until 2 atoms of hydrogen are absorbed. This is followed by the catalyst filtered off, the filtrate evaporated in vacuo and the crystalline solidified and completely dried residue dissolved in absolute alcohol and washed with dry Ether pleases. The m-oxyphenylethanolamine hydrochloride thus obtained forms white crystals from 159 to 16o °. Example 2 50 parts of m-acetoxy-c) -acetaminoacetophenone (obtained by acetylating the m-oxy-craminoacetophenone mentioned in example i) are in ethyl acetate with hydrogen in the presence of 1o parts of a nickel catalyst in the autoclave under pressure at an elevated temperature up to the absorption of 2 atoms of hydrogen hydrogenated. The catalyst is then filtered off and the solvent is evaporated off. The m-acetoxyphenylethanolacetamine is recrystallized from the residue obtained in pure form.

Durch Erwärmen dieser Verbindung z. B. mit verdünnter Salzsäure erhält man das m-Oxyphenyläthanol-acetamin, aus welchem bei weit.-rer Verseifung die im Beispiel i beschriebene Verbindung gewonnen wird.By heating this compound e.g. B. obtained with dilute hydrochloric acid one the m-Oxyphenyläthanol-acetamin, from which in far.-rer saponification the im Example i described compound is obtained.

Claims (1)

PATENTANSPRUCH: urerfahren zur Herstellung eines Oxyphenyläthanolamins, dadurch gekennzeichnet, daß man m-Oxy-a)-aminoacetophenon in an sich bekannter Weise, gegebenenfalls unter zeitweiser Blockierung der Oxy- bzw. Aminogruppe, mit Reduktionsmitteln in m-Oxyphenyl-äthanolamin überführt.PATENT CLAIM: very experienced in the production of an oxyphenylethanolamine, characterized in that m-oxy-a) -aminoacetophenone in a manner known per se, optionally with temporary blocking of the oxy or amino group, with reducing agents converted into m-oxyphenylethanolamine.
DEL2525D 1938-09-14 1938-11-16 Process for the preparation of an oxyphenyl-ethanolamine Expired DE913779C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR913779X 1938-09-14

Publications (1)

Publication Number Publication Date
DE913779C true DE913779C (en) 1954-08-09

Family

ID=9421943

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL2525D Expired DE913779C (en) 1938-09-14 1938-11-16 Process for the preparation of an oxyphenyl-ethanolamine

Country Status (1)

Country Link
DE (1) DE913779C (en)

Similar Documents

Publication Publication Date Title
DE965036C (en) Process for the preparation of p-(bis-2-chloroethylamino)-ª‰-phenyl-alanine
DE913779C (en) Process for the preparation of an oxyphenyl-ethanolamine
DE964057C (en) Process for the preparation of ª ‰ -oxybutyric acid-p-phenetidide
DE1131665B (en) Process for the preparation of aminosteroid compounds
DE2624177A1 (en) PROCESS FOR THE PREPARATION OF M-BENZOYLHYDRATROPIC ACID
AT229496B (en) Process for the preparation of the new nicotinic acid ester of dihydroxycodeinone
DE716579C (en) Process for the production of ester amides of almond acid
DE747119C (en) Process for the preparation of a sulfanilamide compound which is free of impurities and is particularly suitable for external use
DE739151C (en) Process for the preparation of basic esters of dialicyclic or aryl-alicyclic acetic acids
DE802571C (en) Process for the preparation of 3-oxy-N-methylmorphinan and its salts
AT142027B (en) Process for the preparation of acyl derivatives of the dihydrofollicle hormone.
DE423026C (en) Process for the preparation of a Bz-tetrahydrooxyquinoline
AT269886B (en) Process for the production of new benzomorphan derivatives and their salts
DE968485C (en) Process for the production of guanidides of organic sulfonic acids
AT214929B (en) Process for the preparation of thiaxanthenes substituted in the 9-position and their acidic addition salts
DE1793629C3 (en) Process for the preparation of new substituted malonic acid monohydrazides
AT142359B (en) Process for the production of hydrogenation products of the follicular hormones obtained from animal or vegetable material or synthetically.
DE613403C (en) Process for the preparation of barbituric acids substituted on carbon and nitrogen
AT223595B (en) Process for the preparation of the new optical antipodes of the one of the two possible α- and β-erythro-racemates of 1- (4'-hydroxyphenyl) -2- (1 "-methyl-2" -phenoxyäthylamino) -propanol- (1), whose hydrochloride has the lowest solubility in water
AT265530B (en) Process for the preparation of new isoquinoline derivatives
DE651475C (en) Process for the preparation and purification of OEstradiol
AT257571B (en) Process for the preparation of the new N-benzyl-α, α-dimethyl-β- (p-fluorophenyl) ethylamine and its salts
DE1950219C3 (en)
DE575470C (en) Process for the preparation of C, C-disubstituted derivatives of barbituric acid
DE820435C (en) Process for the production of thiosterols