DE222809C - - Google Patents

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Publication number
DE222809C
DE222809C DENDAT222809D DE222809DA DE222809C DE 222809 C DE222809 C DE 222809C DE NDAT222809 D DENDAT222809 D DE NDAT222809D DE 222809D A DE222809D A DE 222809DA DE 222809 C DE222809 C DE 222809C
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Germany
Prior art keywords
parts
acid
chloride
propionic acids
reaction
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DENDAT222809D
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German (de)
Publication of DE222809C publication Critical patent/DE222809C/de
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C275/00Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C275/46Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups containing any of the groups, X being a hetero atom, Y being any atom, e.g. acylureas
    • C07C275/48Y being a hydrogen or a carbon atom
    • C07C275/50Y being a hydrogen or an acyclic carbon atom

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Description

Es wurde gefunden, daß die Derivate der ß-ß-dialkylierten Propionsäuren der Formel:It has been found that the derivatives of the ß-ß-dialkylated propionic acids of the formula:

H-C H2-COOHHC H 2 -COOH

(R1 bedeutet Alkyl, R2 Alkyl mit Ausnahme von Methyl und Äthyl), wie Ester, Amide und Ureide wertvolle therapeutische Eigenschaften besitzen. Die neuen Körper sind fast geschmacklos. Da sie außerdem vom (R 1 denotes alkyl, R 2 denotes alkyl with the exception of methyl and ethyl), such as esters, amides and ursides, have valuable therapeutic properties. The new bodies are almost tasteless. Since they are also dated

ίο Magen sehr gut vertragen werden und den Appetit nicht beeinflussen, haben sich die neuen Produkte, als wertvolle Sedativa erwiesen. Sie besitzen die therapeutisch wertvollen . Eigenschaften der Isovaleriansäurederivate in erhöhtem Maße.ίο be tolerated very well and the stomach Do not affect appetite, the new products have proven to be valuable sedatives. You own the therapeutically valuable ones. Properties of the isovaleric acid derivatives in increased degree.

Zur Darstellung der neuen Verbindungen verfährt man in der Weise, daß man die ß-ß-dialkylierten Propionsäuren der obigen Formel in üblicher Weise in die Amide, Harnstoffverbindungeri oder Ester überführt.To represent the new connections one proceeds in such a way that one uses the ß-ß-dialkylated propionic acids of the above formula in the usual way into the amides, urea compounds or ester converted.

Beispiel 1.Example 1.

Zu 130 Teilen ß-ß-Diäthylpropionsäure läßt man langsam 150 Teile Phosphortrichlorid zutropfen und erwärmt das Gemisch 3 bis 4 Stunden auf dem Wasserbad. Durch fraktionierte Destillation wird das Chlorid isoliert. Es siedet bei 150 bis 155 °.Leaves to 130 parts of ß-ß-diethylpropionic acid 150 parts of phosphorus trichloride are slowly added dropwise and the mixture is heated to 3 to 4 hours on the water bath. The chloride is isolated by fractional distillation. It boils at 150 to 155 °.

Zur Darstellung des Säureamids werden 150 Teile des Chlorids zu einem Überschuß von kaltem wäßrigem Ammoniak zugefügt und das abgeschiedene Amid isoliert und aus Benzol umkristallisiert. Schmelzpunkt 127,5°.To prepare the acid amide, 150 parts of the chloride are used in excess added by cold aqueous ammonia and the deposited amide isolated and removed Benzene recrystallized. Melting point 127.5 °.

Beispiel 2. „,Example 2. ",

150 Teile ß-ß-Diäthylpropionylchlorid werden mit 170 Teilen fein gepulvertem Harnstoff verrieben und das Gemisch nach beendeter Reaktion noch 2 bis 3 Stunden auf dem Wasserbade erwärmt. Man wäscht darauf das Reaktionsprodukt mit heißem Wasser und kristallisiert den so erhaltenen ß-ß-Diäthylpropionylharnstoff aus verdünntem Alkohol um. Schmelzpunkt 197 °.150 parts of ß-ß-diethylpropionyl chloride will be Triturated with 170 parts of finely powdered urea and the mixture after completion Reaction warmed on the water bath for another 2 to 3 hours. One washes on it the reaction product with hot water and crystallizes the ß-ß-diethylpropionylurea thus obtained from diluted alcohol. Melting point 197 °.

■D ■ ■ 1 ■ D ■ ■ 1

Beispiel 3.Example 3.

Zu 150 Teilen Menthol in 100 Teilen Pyridin werden unter Kühlung 150 Teile Diäthylpropionylchlorid zugegeben. Nach beendeter Reaktion nimmt man das Gemisch mit verdünnter Schwefelsäure auf, wäscht den Ester mit Wasser bis zur neutralen Reaktion und destilliert den ölig abgeschiedenen Ester nach dem Trocknen über Natriumsulfat im Vakuum. Er stellt eine wasserhelle Flüssigkeit dar, die bei 155 ° und 12 mm siedet.To 150 parts of menthol in 100 parts of pyridine 150 parts of diethylpropionyl chloride are added with cooling. After finished In the reaction, the mixture is taken up with dilute sulfuric acid and the ester is washed with water until the reaction is neutral and the oily ester which has separated out is re-distilled drying over sodium sulfate in vacuo. It represents a water-white liquid that boils at 155 ° and 12 mm.

Pate ν τ-Α ν SPRU c η :Pate ν τ-Α ν SPRU c η:

Verfahren zur Darstellung von Derivaten der ß-ß-dialkylierten Propionsäuren (mit Ausnahme der Isovaleriansäure und der Methyläthylpropionsäure), darin bestehend, daß man diese substituierten Propionsäuren in ihre Ester, Amide oder Ureide überführt.Process for the preparation of derivatives of ß-ß-dialkylated propionic acids (with the exception of isovaleric acid and methylethylpropionic acid), consisting of that one converts these substituted propionic acids into their esters, amides or ureides.

BERLIN. '-'GEDRUCKT IN DER REICHSDRUCKERIiI.BERLIN. '-'PRINTED IN THE REICHSDRUCKERIiI.

Claims (1)

KAISERLICHESIMPERIAL PATENTAMT.PATENT OFFICE. PATENTSCHRIFTPATENT LETTERING - JVl 222809 -KLASSE 12 o. GRUPPE - JVl 222809 - CLASS 12 or GROUP Patentiert im Deutschen Reiche vom 28. Oktober 1908 ab.Patented in the German Empire on October 28, 1908.
DENDAT222809D Active DE222809C (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005422A2 (en) * 1978-05-03 1979-11-14 Sanofi S.A. Derivatives of omega-dialkylalkanoic acids, processes for their preparation and their therapeutical use

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005422A2 (en) * 1978-05-03 1979-11-14 Sanofi S.A. Derivatives of omega-dialkylalkanoic acids, processes for their preparation and their therapeutical use
EP0005422A3 (en) * 1978-05-03 1979-12-12 Sanofi, Societe Anonyme Derivatives of omega-dialkylalkanoic acids, processes for their preparation and their therapeutical use

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