DE837242C - Process for the preparation of 2-oxy-4-ªÏ-aminomethyl-benzene-1-carboxylic acid - Google Patents

Process for the preparation of 2-oxy-4-ªÏ-aminomethyl-benzene-1-carboxylic acid

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Publication number
DE837242C
DE837242C DEB2259A DEB0002259A DE837242C DE 837242 C DE837242 C DE 837242C DE B2259 A DEB2259 A DE B2259A DE B0002259 A DEB0002259 A DE B0002259A DE 837242 C DE837242 C DE 837242C
Authority
DE
Germany
Prior art keywords
carboxylic acid
oxy
aminomethyl
benzene
preparation
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
DEB2259A
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German (de)
Other versions
DE1616988U (en
Inventor
Dr Richard Kuhn
Dipl-Chem Heinrich Trischmann
Dr Friedrich Zilliken
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BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Priority to DEB2259A priority Critical patent/DE837242C/en
Application granted granted Critical
Publication of DE837242C publication Critical patent/DE837242C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C229/00Compounds containing amino and carboxyl groups bound to the same carbon skeleton
    • C07C229/38Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino groups bound to acyclic carbon atoms and carboxyl groups bound to carbon atoms of six-membered aromatic rings of the same carbon skeleton

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

Description

Verfahren zur Herstellung von 2-Oxy-4- oi-aminomethyl-benzol-l-carbonsäure I:s tvtii-dc gefunden, (laß man 2-Oxy-4-oo-atTiino- met@ivl-1>enZol-i-carlioisätire erhält. wenn man 2-Oxv-.@-cvanl>enzol-1-carbonsä ure in Gegenwart von 11vdrilertittgskatalvsatoren mit Wasserstoff be- lt.m@lelt. 1)ie als Ausgangsstoff für <las vorliegende Ver- ialiren verwendete 2-(W _ -.@-cyanl>enzol-t-carl>on- s:itir(- ist beispielsweise durch Umsetzung des I)i:tzoitiitinis2tlzes der 2-Oxv-.4-aniinobetizol-i-car- lnins:iure finit Kupfersulfat und Kaliumcvanid nach S a 1i (1 in e v e r erhältlich. 1)ie Hydrierung der Cyan- gruppe zur (,)-_\initiomethylgrtippe verläuft sehr leicht. Sie gelingt beispielsweise unter Verwendung \OH I':tlla(litlillträgerkatalvsatoreti bereits bei ge- wöhnlicher Temperatur unter gewöhuilichein Druck. Bei Verwendung anderer Hydri-erkatalysatoren, z. B. Ranev-Katalvsatoren oder anderen metallischen 1-Tydrierkatalysatoreti, eventuell auf Trägern, ist es gegebenenfalls von Vorteil, unter erhöhtem Druck und eventuell bei mäßig erhöhter Temperatur zu arbeiten. .auch oxydische oder sulfidische Hydrierkatalysatoren können angewandt werden. Als Lösungsmittel können Wasser, sauerstoffhaltige organische Lösungsmittel, z. B. Alkohol oder Essigsäure, und gegebenenfalls auch Mischungen von Wasser mit@solchen Lösungsmitteln dienen.Process for the preparation of 2-oxy-4-oi-aminomethyl-benzene-1-carboxylic acid I: s tvtii-dc found, (let 2-Oxy-4-oo-atTiino- met @ ivl-1> enZol-i-carlioisätire. if 2-Oxv -. @ - cvanl> enzene-1-carboxylic acid in the presence of 11vdrilertittgkatalvsatoren with hydrogen lt.m@lelt. 1) ie as the starting material for the present ialiren used 2- (W _ -. @ - cyanl>enzol-t-carl> on- s: itir (- is, for example, implemented by the I) i: tzoitiitinis2tlzes der 2-Oxv-.4-aniinobetizol-i-car- Inins: iure finite copper sulfate and potassium cvanide S a 1i (1 available in ever. 1) he hydrogenation of the cyano group to the (,) -_ \ initiomethylgrtippe runs a lot easy. For example, you can use it \ OH I ': tlla (litlillträgerkatalvsatoreti already with ordinary temperature under ordinary pressure. When using other hydrodynamic catalysts, e.g. B. Ranev catalysts or other metallic 1-Tydrierkatalysatoreti, possibly on supports, it may be advantageous to work under elevated pressure and possibly at moderately elevated temperature. Oxydic or sulfidic hydrogenation catalysts can also be used. As a solvent, water, oxygen-containing organic solvents, e.g. B. alcohol or acetic acid, and optionally also mixtures of water with @ such solvents are used.

Aus den der Hydrierung unterworfenen Lösungen läßt sich die 2-Oxv-4-r,>-aminomethyl-benzol-i-carbonsäure nach dem Abfiltrieren des Katalysators durch Eindampfen abscheiden und aus heißem Wasser umkristallisieren. The 2-Oxv-4-r,> - aminomethyl-benzene-i-carboxylic acid can be separated off by evaporation from the solutions subjected to the hydrogenation after the catalyst has been filtered off and recrystallized from hot water.

Die 2-Oxy-4-oraminomefhyl-1>ettzol-i-carltonsäure besitzt die Eigenschaft, das Wachstum von Tuberkelbazillen in ähnlicher Weise zu hemmen wie die 2-Oxv-.l-aminobenzol-t-carbonsäure; sie besitzt aber gegenüber dieser Verbindung den Vorzug, in Form der freien Säure bzw. des Zwitterions in \\'asser löslich zu sein, wobei man praktisch neutral reagierende Lösungen erhält.The 2-oxy-4-oraminomefhyl-1> ettzol-i-carltonic acid has the property to inhibit the growth of tubercle bacilli in a manner similar to that of 2-Oxv-.l-aminobenzene-t-carboxylic acid; however, it has the advantage over this compound, in the form of the free acid or the zwitterion to be soluble in water, whereby one reacts practically neutrally Solutions.

Die in dem nachstehenden Beispiel angegebenen "feile sind Gewichtsteile, sofern nicht anders bemerkt. Beispiel 23 'feile 2-Oxy-4-cyanbenzol-i-carbonsäure löst man in fioo Teilen 5oo/oiger Essigsäure, versetzt mit einer -Aufschlämmung von 2o Teilen eines 5o/oPalladium auf Bariumsulfat enthaltenden Katalysators in 1 4oo Teilen wasserfreiem Äthanol und leitet bei gewöhnlicher Temperatur Wasserstoff unter Schütteln ein. Wenn die theoretisch erforderliche Menge Wasserstoff, die doppelt äquimolekulare Menge. aufgenommen worden ist, kommt die Hydrierung von selbst zum Stillstand.The files given in the example below are parts by weight, unless otherwise noted. Example 23 'Files 2-oxy-4-cyanobenzene-i-carboxylic acid are dissolved in 500 parts of 500% acetic acid, to which a suspension of 20 parts is added 5o / oPalladium containing on barium sulfate catalyst in 1 4oo parts of anhydrous ethanol and passes a hydrogen at ordinary temperature with shaking. When the theoretically required amount of hydrogen, the double equimolecular amount has been added., the hydrogenation comes to a complete stop.

Man filtriert ab, vertreibt die Lösungsmittel und löst die ausgeschiedene Säure aus wenig heißem Wasser um. Sie bildet rechteckige weiße Blättchen von süßem Geschmack (F. 299 bis 300e). Bei stark vermindertem Druck (o,ooi Torr. 22o° C) läßt sie sich unzersetzt sublimieren.It is filtered off, the solvents are driven off and the precipitated is dissolved Acid from a little hot water. It makes rectangular white leaflets of sweet Taste (F. 299 to 300e). At greatly reduced pressure (o, ooi Torr. 220 ° C) leaves they sublimate without being decomposed.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von 2-Oxy-4-(oaminomethyl-henzol-t-carbonsäure. dadurch gekennzeichnet, daß man 2-Oxyd-4-cyanbenzolt-carl>onsäure in Gegenwart von Hydrierungskatalvsatoren mit Wasserstoff lehandelt. PATENT CLAIM: Process for the production of 2-oxy-4- (oaminomethyl-henzene-t-carboxylic acid. Characterized in that 2-oxyd-4-cyanobenzene-carlic acid is treated with hydrogen in the presence of hydrogenation catalysts.
DEB2259A 1950-02-24 1950-02-25 Process for the preparation of 2-oxy-4-ªÏ-aminomethyl-benzene-1-carboxylic acid Expired DE837242C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB2259A DE837242C (en) 1950-02-24 1950-02-25 Process for the preparation of 2-oxy-4-ªÏ-aminomethyl-benzene-1-carboxylic acid

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE679005X 1950-02-24
DEB2259A DE837242C (en) 1950-02-24 1950-02-25 Process for the preparation of 2-oxy-4-ªÏ-aminomethyl-benzene-1-carboxylic acid

Publications (1)

Publication Number Publication Date
DE837242C true DE837242C (en) 1952-04-21

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ID=25946097

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB2259A Expired DE837242C (en) 1950-02-24 1950-02-25 Process for the preparation of 2-oxy-4-ªÏ-aminomethyl-benzene-1-carboxylic acid

Country Status (1)

Country Link
DE (1) DE837242C (en)

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