CH184300A - Process for the preparation of a condensation product from the a-naphthylamide of 2,3-oxynaphthoic acid and formaldehyde. - Google Patents

Process for the preparation of a condensation product from the a-naphthylamide of 2,3-oxynaphthoic acid and formaldehyde.

Info

Publication number
CH184300A
CH184300A CH184300DA CH184300A CH 184300 A CH184300 A CH 184300A CH 184300D A CH184300D A CH 184300DA CH 184300 A CH184300 A CH 184300A
Authority
CH
Switzerland
Prior art keywords
formaldehyde
condensation product
naphthylamide
oxynaphthoic acid
preparation
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH184300A publication Critical patent/CH184300A/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C233/00—Carboxylic acid amides
    • C07C233/01—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms
    • C07C233/12—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by halogen atoms or by nitro or nitroso groups

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

Description

  

  Verfahren zur Herstellung eines Kondensationsproduktes aus dem     a-Naphthylamid     der     2.3-Ogynaphthoesäure    und .Formaldehyd.    Es wurde gefunden, dass man ein Konden  sationsprodukt aus einem     Arylamid    der     2.3-          Oxynaphthoesäure    und Formaldehyd erhält,  wenn man nach erfolgter Einwirkung von  Formaldehyd auf das     a-Naphthylamid    der       2.3-Oxynaphthoesäure    das entstandene Pro  dukt mit einer Verbindung behandelt, die  Formaldehyd abbindet. Diese Verbindung ver  bindet sich nicht mit dem Formaldehyd  kondensationsprodukt, sondern sie entzieht  demselben locker gebundenes Formaldehyd.

    Das so behandelte Produkt, das ein gelbes  Pulver bildet, das sich in verdünnter Natrium  hydroxydlösung mit gelber Farbe löst, spaltet  deshalb beim Lagern keinen Formaldehyd ab.    <I>Beispiel:</I>  Eine Mischung von 303 Teilen     2.3-Oxy-          naphthoesäure-a-naphthylamid,    532 Teilen       Natriumhydroxydlösung    (30      /oig),   <B>100</B> Teilen  Alkohol wird gut     angeteigt.    Die feine Paste    gibt man bei 60-70 o unter Rühren zu 6000  Teilen Wasser. Es entsteht eine klare Lösung.  Bei 40-45 0 lässt man 41,2 Teile Form  aldehydlösung (40      /oig)        zutropfen    und rührt  während 20 Stunden bei gewöhnlicher Tempe  ratur.

   Hierauf werden<B>500</B> Teile     Natrium-          hydrosulfit    zugefügt. Man lässt 20 Stunden  rühren, filtriert von Verunreinigungen ab und  fällt das Salz des Kondensationsproduktes  durch     vorsichtiges    Zusetzen von Kochsalz aus.  Es wird     genutscht    und im Vakuum bei 35 bis  40 o getrocknet. Man erhält ein grüngelbes  Pulver, das vollständig beständig ist und beim  Lagern keinen Formaldehyd abspaltet.



  Process for the preparation of a condensation product from the α-naphthylamide of 2,3-ogynaphthoic acid and .Formaldehyde. It has been found that a condensation product of an arylamide of 2,3-oxynaphthoic acid and formaldehyde is obtained if, after the action of formaldehyde on the a-naphthylamide of 2,3-oxynaphthoic acid, the resulting product is treated with a compound that binds formaldehyde. This compound does not bind itself with the formaldehyde condensation product, but it removes the loosely bound formaldehyde.

    The product treated in this way, which forms a yellow powder that dissolves in dilute sodium hydroxide solution with a yellow color, therefore does not split off any formaldehyde during storage. <I> Example: </I> A mixture of 303 parts of 2,3-oxynaphthoic acid-a-naphthylamide, 532 parts of sodium hydroxide solution (30%), and 100 parts of alcohol is made into a paste. The fine paste is added to 6000 parts of water at 60-70 o with stirring. A clear solution is created. At 40-45 0, 41.2 parts of formaldehyde solution (40%) are added dropwise and the mixture is stirred for 20 hours at normal temperature.

   <B> 500 </B> parts of sodium hydrosulfite are then added. The mixture is stirred for 20 hours, impurities are filtered off and the salt of the condensation product is precipitated by carefully adding sodium chloride. It is sucked and dried in a vacuum at 35 to 40 o. A green-yellow powder is obtained which is completely stable and does not split off any formaldehyde on storage.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Konden sationsproduktes aus einem Arylamid der 2.3-Oxynaphthoesäure und Formaldehyd, da durch gekennzeichnet, dass nach erfolgter Ein wirkung von Formaldehyd auf das a-Naphthyl- amid der 2.3-Ogynaphthoesäur-e das ent standene Produkt mit einer Verbindung be handelt wird, die Formaldehyd abbindet. Das neue Produkt bildet ein gelbes Pulver, das sich in verdünnter Natriumhydrogydlösung mit gelber Farbe löst und beim Lagern kein Formaldehyd abspaltet. PATENT CLAIM: Process for the production of a condensation product from an aryl amide of 2,3-oxynaphthoic acid and formaldehyde, characterized in that after the action of formaldehyde on the a-naphthyl amide of 2,3-ogynaphthoic acid, the product formed with a compound acts that binds formaldehyde. The new product forms a yellow powder, which dissolves in a dilute sodium hydrogen solution with a yellow color and does not split off formaldehyde during storage.
CH184300D 1935-04-13 1935-04-13 Process for the preparation of a condensation product from the a-naphthylamide of 2,3-oxynaphthoic acid and formaldehyde. CH184300A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH184300T 1935-04-13

Publications (1)

Publication Number Publication Date
CH184300A true CH184300A (en) 1936-05-31

Family

ID=4432923

Family Applications (1)

Application Number Title Priority Date Filing Date
CH184300D CH184300A (en) 1935-04-13 1935-04-13 Process for the preparation of a condensation product from the a-naphthylamide of 2,3-oxynaphthoic acid and formaldehyde.

Country Status (1)

Country Link
CH (1) CH184300A (en)

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