ECSP982467A - PROCESS TO PREPARE O- (3-AMINO -2- HYDROXY-PROPIL) HYDROXYMIC ACID HALIDES - Google Patents

PROCESS TO PREPARE O- (3-AMINO -2- HYDROXY-PROPIL) HYDROXYMIC ACID HALIDES

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Publication number
ECSP982467A
ECSP982467A ECSP982467A ECSP982467A EC SP982467 A ECSP982467 A EC SP982467A EC SP982467 A ECSP982467 A EC SP982467A EC SP982467 A ECSP982467 A EC SP982467A
Authority
EC
Ecuador
Prior art keywords
formula
hydroxy
amino
carboxamide oxime
salt
Prior art date
Application number
Other languages
Spanish (es)
Inventor
Laszlo Urogdi
Mihaly Barabas
Ede Marvanyos
Magdolna Torok
Zita Csakai
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 filed Critical
Priority to ECSP982467 priority Critical patent/ECSP982467A/en
Publication of ECSP982467A publication Critical patent/ECSP982467A/en

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

Abstract

Esta invención se refiere a un proceso novedoso para preparar HALUROS DE ACIDO O-(3-AMINO-2-HIDROXI-PROPIL)-HIDROXIMICO de fórmula (I) por medio de la reacción de una oxima de carboxamida de fórmula (II), en la cual R1 tiene los valores indicados con un derivado de 3-amino-2-hidroxi-propano reactivo; diazotizar la oxima de carboxamida sustituida en O resultante con nitrito de sodio en presencia de haluro de hidrógeno; descomponer la sal de diazonio, aislar el producto obtenido y, si fuera conveniente, separar los enantiómeros ópticamente activos y/o hacer reaccionar la base resultante con un ácido mineral u orgánico. El proceso comprende hacer reaccionar oxima de carboxamida de fórmula (II) con una sal de 3-hidroxi acetidinio de fórmula (III), en la que R2 y R3 tiene los valores indicados precedentemente, e Y es una sal que forma un anión en un medio alcohólico inferior, preferentemente etanólico, alcalizado mediante un hidróxido alcalino, y antes de diazotizar el producto intermedio de oxima de carboxamida sustituída en O obtenido, la mezcla de la reacción es neutralizada y se elimina el solvente orgánico. El proceso de la invención da compuestos de fórmula (I) con un rendimiento mayor, comparado con los procesos del arte previo.This invention relates to a novel process for preparing O- (3-AMINO-2-HYDROXY-PROPIL) -HYDROXIMIC ACID HALIDS of formula (I) by reaction of a carboxamide oxime of formula (II), in which R1 has the values indicated with a reactive 3-amino-2-hydroxy-propane derivative; diazotize the resulting O-substituted carboxamide oxime with sodium nitrite in the presence of hydrogen halide; decompose the diazonium salt, isolate the product obtained and, if appropriate, separate the optically active enantiomers and / or react the resulting base with a mineral or organic acid. The process comprises reacting carboxamide oxime of formula (II) with a 3-hydroxy acetidinium salt of formula (III), in which R2 and R3 have the values indicated above, and Y is a salt that forms an anion in a Lower alcoholic medium, preferably ethanolic, alkalized by an alkaline hydroxide, and before diazotizing the obtained O-substituted carboxamide oxime intermediate, the reaction mixture is neutralized and the organic solvent is removed. The process of the invention gives compounds of formula (I) with a higher yield, compared to the processes of the prior art.

ECSP982467 1998-04-02 1998-04-02 PROCESS TO PREPARE O- (3-AMINO -2- HYDROXY-PROPIL) HYDROXYMIC ACID HALIDES ECSP982467A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ECSP982467 ECSP982467A (en) 1998-04-02 1998-04-02 PROCESS TO PREPARE O- (3-AMINO -2- HYDROXY-PROPIL) HYDROXYMIC ACID HALIDES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ECSP982467 ECSP982467A (en) 1998-04-02 1998-04-02 PROCESS TO PREPARE O- (3-AMINO -2- HYDROXY-PROPIL) HYDROXYMIC ACID HALIDES

Publications (1)

Publication Number Publication Date
ECSP982467A true ECSP982467A (en) 1999-01-19

Family

ID=42043388

Family Applications (1)

Application Number Title Priority Date Filing Date
ECSP982467 ECSP982467A (en) 1998-04-02 1998-04-02 PROCESS TO PREPARE O- (3-AMINO -2- HYDROXY-PROPIL) HYDROXYMIC ACID HALIDES

Country Status (1)

Country Link
EC (1) ECSP982467A (en)

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