DE537188C - Process for the preparation of aminoketo alcohols - Google Patents

Process for the preparation of aminoketo alcohols

Info

Publication number
DE537188C
DE537188C DE1930537188D DE537188DD DE537188C DE 537188 C DE537188 C DE 537188C DE 1930537188 D DE1930537188 D DE 1930537188D DE 537188D D DE537188D D DE 537188DD DE 537188 C DE537188 C DE 537188C
Authority
DE
Germany
Prior art keywords
parts
aminoketo
preparation
water
alcohols
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
DE1930537188D
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.)
F Hoffmann La Roche AG
Original Assignee
F Hoffmann La Roche AG
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 F Hoffmann La Roche AG filed Critical F Hoffmann La Roche AG
Application granted granted Critical
Publication of DE537188C publication Critical patent/DE537188C/en
Expired legal-status Critical Current

Links

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Verfahren zur Darstellung von Aminoketoalkoholen Nach dem Verfahren des Hauptpatentes 525 093 werden Derivate des Ephedrins dadurch erhalten, daß man auf Ephedrin i-Phenyl-ioxo-2-brompropan (a-Brompropiophenon) einwirken läßt.Process for the preparation of aminoketo alcohols According to the process of the main patent 525 093 derivatives of ephedrine are obtained by allows i-phenyl-ioxo-2-bromopropane (a-bromopropiophenone) to act on ephedrine.

Es wurde nun gefunden, daß man an Stelle von Ephedrin ß-Phenyläthanolmethylamin oder dessen p-Oxyderivat verwenden kann. Die neuen Verbindungen sind in den üblichen organischen Lösungsmitteln, wie Alkohol, Äther, Benzol, Chloroform, leicht löslich, in Wasser unlöslich. Mit Säure bilden sie in Wasser leicht lösliche Hydrochloride. Sie sollen als solche therapeutische Verwendung finden oder als Zwischenprodukte zur Herstellung pharmazeutischer Präparate dienen.It has now been found that ß-phenylethanolmethylamine can be used instead of ephedrine or its p-oxy derivative can use. The new connections are in the usual organic solvents such as alcohol, ether, benzene, chloroform, easily soluble, insoluble in water. With acid they form hydrochlorides which are easily soluble in water. They should find therapeutic use as such or as intermediates serve to manufacture pharmaceutical preparations.

Beispiel i Teile ß-Phenyläthanolmethylaminhydrochlorid, C,H5 - CH (OH) - CH, - NH - CH"HCl, werden q. Stunden mit 2,4 Teilen Kaliumhydroxyd und 4,5 Teilen a-Brompropiophenon in io Teilen Wasser und io Teilen Benzol gekocht. Zur Vervollständigung der Reaktion wird noch eine halbe Stunde gekocht und dann die Basen mit verdünnter Salzsäure ausge$chüttelt. Die salzsaure Lösung wird einige Male mit Äther durchgeschüttelt und das Kondensationsprodukt mit Natronlauge ausgefällt. Es wird mit Wasser gewaschen und mit warmer, verdünnter Salzsäure gelöst. Beim Erkalten kristallisiert das Hydrochlorid der neuen Verbindung aus. Dieses wird aus Wasser umkristallisiert. Es schmilzt bei 177'. Die Base ist in Alkohol, Äther, Chloroform und Benzol leicht, in Wasser unlöslich und schmilzt bei iio °. Beispiel 2 2 Teile p-Oxyphenyläthanolmethylamintartrat werden in 2o Teilen Wasser und io Teilen Benzol mit i Teil Natriumcarbonat und 3 Teilen a-Brompropiophenon 3/4 Stunden gekocht. Dann wird die Mischung mit Salzsäure versetzt, das Unlösliche abgetrennt und die salzsaure Lösung mit Äther geschüttelt. Die Base wird mit Natriumcarbonat gefällt, in Äther aufgenommen und durch Lösen in Natronlauge und Fällen mit Bicarbonat gereinigt. Die mit Bicarbonat ausgefällte Base wird wieder in Äther aufgenommen, mit alkoholischer Salzsäure neutralisiert und eingedampft. Man erhält das Hydrochlorid des p-Oxyphenyläthanolphenylpropanonmethylamins, welches sich sehr leicht in Alkohol und Wasser löst. Die Base ist leicht löslich in Äther und in Natronlauge; sie wird durch Kohlensäure wieder gefällt.Example 1 parts of β-phenylethanolmethylamine hydrochloride, C, H5 - CH (OH) - CH, - NH - CH "HCl, are mixed with 2.4 parts of potassium hydroxide and 4.5 parts of α-bromopropiophenone in 10 parts of water and 10 parts for q. Hours Benzene boiled. To complete the reaction, boil for another half an hour and then shake out the bases with dilute hydrochloric acid. The hydrochloric acid solution is shaken several times with ether and the condensation product is precipitated with sodium hydroxide solution. It is washed with water and with warm, dilute solution Hydrochloric acid dissolved. On cooling, the hydrochloride of the new compound crystallizes out. This is recrystallized from water. It melts at 177 °. The base is light in alcohol, ether, chloroform and benzene, insoluble in water and melts at 100 ° Parts of p-oxyphenylethanolmethylamine tartrate are boiled in 20 parts of water and 10 parts of benzene with 1 part of sodium carbonate and 3 parts of a-bromopropiophenone for 3/4 hours t hydrochloric acid is added, the insolubles are separated off and the hydrochloric acid solution is shaken with ether. The base is precipitated with sodium carbonate, taken up in ether and purified by dissolving in sodium hydroxide solution and precipitating with bicarbonate. The base precipitated with bicarbonate is taken up again in ether, neutralized with alcoholic hydrochloric acid and evaporated. The hydrochloride of p-Oxyphenyläthanolphenylpropanonmethylamins, which dissolves very easily in alcohol and water. The base is easily soluble in ether and in caustic soda; it is precipitated again by carbonic acid.

Claims (1)

PATENTANSPRUCH: Weitere Ausbildung des durch Patent 525 o93 geschützten Verfahrens, dadurch gekennzeichnet, daß man an Stelle von Ephedrin hier ß-Phenyläthanolmethylamin oder dessen p-Oxyderivat verwendet.PATENT CLAIM: Further training of the protected by patent 525 o93 Process, characterized in that ß-phenylethanolmethylamine is used instead of ephedrine or its p-oxy derivative is used.
DE1930537188D 1930-06-27 1930-06-27 Process for the preparation of aminoketo alcohols Expired DE537188C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE537188T 1930-06-27

Publications (1)

Publication Number Publication Date
DE537188C true DE537188C (en) 1931-10-30

Family

ID=6557622

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1930537188D Expired DE537188C (en) 1930-06-27 1930-06-27 Process for the preparation of aminoketo alcohols

Country Status (1)

Country Link
DE (1) DE537188C (en)

Similar Documents

Publication Publication Date Title
DE1802162A1 (en) New N-pyridylmethylidene homocysteine thiolactone compound and process for its preparation
DE537188C (en) Process for the preparation of aminoketo alcohols
DE2729165C2 (en) Phenethylamine derivatives and their salts, processes for their preparation and pharmaceutical compositions containing them
DE2522218C3 (en) Composition for human or veterinary medicine, methylamine derivatives and processes for their preparation
DE3218822C2 (en)
DE924693C (en) Process for the preparation of monoethers of 5, 8-dioxy-2-methyl-4 ', 5': 6, 7-furanochromone
AT126160B (en) Process for the preparation of aminoketo alcohols.
DE539103C (en) Process for the preparation of ephedrine droplets
DE833816C (en) Process for the production of diuretically active organic mercury compounds
DE963514C (en) Process for the production of poorly soluble, crystallized streptomycin and dihydrostreptomycin salts
AT217025B (en) Process for the preparation of new α-aminoisobutyrophenone compounds and their acid addition salts
AT126139B (en) Process for the preparation of basic nitro derivatives of 9-aminoacridine.
AT216522B (en) Process for the preparation of the new N-3,4-dimethylbenzenesulfonyl-N'-tetramethyleneurea
DE653073C (en) Process for the preparation of alkylaminoalkyl ethers of apoquinine
DE953344C (en) Process for the preparation of a new isonicotinoyl hydrazone
AT100211B (en) Process for the preparation of new organic arsenic compounds.
DE870560C (en) Process for preparing nitrogen-disubstituted ªª, ª-diphenylethylamines
DE750481C (en) Process for the production of compounds of des2-methyl-4-amino-naphthols- (1) which are stable in aqueous solutions
DE675959C (en) Process for the preparation of oxyalkoxybenzene compounds
AT263225B (en) Process for the production of new scopolamine methyl sulfate
DE515544C (en) Process for the preparation of reduction products of N-acetylated indoxyls
CH447146A (en) Process for the production of adamantane derivatives
CH199906A (en) Process for the preparation of an imidazole dihydride (4,5) substituted in the 2-position.
CH153685A (en) Process for the preparation of d-pseudophenylpropanolphenylpropanonmethylamine.
DE1095285B (en) Process for the preparation of basic substituted alkylxanthine derivatives