CH269090A - Process for the preparation of a new aldehyde derivative. - Google Patents

Process for the preparation of a new aldehyde derivative.

Info

Publication number
CH269090A
CH269090A CH269090DA CH269090A CH 269090 A CH269090 A CH 269090A CH 269090D A CH269090D A CH 269090DA CH 269090 A CH269090 A CH 269090A
Authority
CH
Switzerland
Prior art keywords
acetylamino
preparation
benzoic acid
soluble
formaldehyde
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft Cilag
Original Assignee
Cilag 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 Cilag Ag filed Critical Cilag Ag
Publication of CH269090A publication Critical patent/CH269090A/en

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Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N37/00Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
    • A01N37/44Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a nitrogen atom attached to the same carbon skeleton by a single or double bond, this nitrogen atom not being a member of a derivative or of a thio analogue of a carboxylic group, e.g. amino-carboxylic acids

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

       

  <B>Verfahren zur Darstellung eines neuen</B>     Aldehydderivates.       Gegenstand der     Erfindung    ist ein Verfah  ren zur Herstellung eines neuen Abkömm  lings eines     Aldehydes,    welcher gute keim  tötende Eigenschaften     besitzt.    Er soll als       Desinfektionsmittel    und in Form seiner  löslichen Salze zur Bekämpfung von Infek  tionskrankheiten     verwendet    werden.    Das Verfahren ist dadurch gekennzeichnet,  dass man     p-Acetyl-amino-benzoesäure    auf  Formaldehyd einwirken lässt, wobei sich die  p-     (N-Oxymethyl-acetylamino)        -benzoesäure    bil  det.

   Der Formaldehyd kann beispielsweise  einer in Gegenwart der     p-Acetylamino-benzoe-          säure    Formaldehyd liefernden Verbindung,  z. B. einem polymeren Formaldehyd     (Trioxy-          methylen,        Paraformaldehyd    usw.) entstam  men.  



  <I>Beispiel:</I>  1,8 g p-     Acetylamino-benzoesäure,    0,8     cm3          40        %ige        Formaldehydlösung        und    5     cm3        2n-          Diäthanolaminlösung    werden gemischt und  unter Schütteln bis zur klaren Lösung auf       80-9O0   <B>C</B> erwärmt.

   Die heisse     Lösung    wird  filtriert und in noch heissem Zustande     auf     ein     pH    von 4-5 eingestellt, worauf sich die       p-(N-Oxymethyl-acetylamino)-benzoesäure    als  feines, weisses Kristallpulver abscheidet.     Aus-          beute:        1,5        g,        entsprechend        72%        der        Theorie.     



  Die neue     Karbonsäure    ist in Alkalien     und     in Lösungen von Aminen leicht löslich, wenig  löslich in Alkohol und schwer löslich in Was  ser, Äther, Chloroform und Benzol.    Sie besitzt schon bei     Zimmertemperatur     grosse Neigung, sich zu zersetzen. Bei höherer  Temperatur erfolgt diese Umwandlung so  rasch, dass der     Schmelzpunkt    der     besehriebe-          n.en    Säure nicht ermittelt werden kann.    Beständig sind dagegen die Salze der  neuen Säure. Ihre     wässrigen    Lösungen reagie  ren nahezu neutral und sind für Injektionen       vorzüglich    geeignet.

      Die gebildete neue     Karbonsäure    lässt sich  auch in Form ihrer Salze, z. B. des Natriums,       Kalziums,    oder als Salze von Aminen, wie       Diäthylamin,        Diäthanolamin,        Morpholin,    iso  lieren. Zu diesem Zweck kann man beim Ar  beiten gemäss dem Beispiel das Ansäuern des  Reaktionsgemisches unterlassen; das dem ver  wendeten     alkalischen    Kondensationsmittel ent  sprechende Salz wird dann direkt und in  nahezu quantitativer Ausbeute erhalten.



  <B> Process for the preparation of a new </B> aldehyde derivative. The invention relates to a method for producing a new descendant of an aldehyde which has good germicidal properties. It should be used as a disinfectant and in the form of its soluble salts to combat infectious diseases. The process is characterized in that p-acetylamino-benzoic acid is allowed to act on formaldehyde, p- (N-oxymethyl-acetylamino) -benzoic acid being formed.

   The formaldehyde can, for example, be a compound which yields formaldehyde in the presence of p-acetylamino-benzoic acid, e.g. B. a polymeric formaldehyde (trioxymethylene, paraformaldehyde, etc.) originates.



  <I> Example: </I> 1.8 g of p-acetylamino-benzoic acid, 0.8 cm3 of 40% formaldehyde solution and 5 cm3 of 2N diethanolamine solution are mixed and brought to 80-90 ° C. with shaking until the solution is clear </B> heated.

   The hot solution is filtered and adjusted to a pH of 4-5 while it is still hot, whereupon the p- (N-oxymethyl-acetylamino) -benzoic acid separates out as a fine, white crystal powder. Yield: 1.5 g, corresponding to 72% of theory.



  The new carboxylic acid is easily soluble in alkalis and in solutions of amines, slightly soluble in alcohol and sparingly soluble in water, ether, chloroform and benzene. Even at room temperature it has a great tendency to decompose. At a higher temperature, this conversion takes place so quickly that the melting point of the particular acid cannot be determined. In contrast, the salts of the new acid are stable. Your aqueous solutions react almost neutrally and are ideally suited for injections.

      The new carboxylic acid formed can also be in the form of its salts, e.g. B. of sodium, calcium, or as salts of amines such as diethylamine, diethanolamine, morpholine, iso lieren. For this purpose you can refrain from acidifying the reaction mixture when working according to the example; the salt corresponding to the alkaline condensing agent used is then obtained directly and in almost quantitative yield.


    

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen Derivates eines Aldehydes, dadurch gekenn zeichnet, dass man p-Acetylamino-benzoesäure auf Formaldehyd einwirken lässt, wobei sich die p-(N-Oxymethyl-acetylamino)-benzoesäure bildet. Das Verfahrensprodukt stellt ein farbloses mikrokristallines Pulver dar, das keinen definierten Schmelzpunkt besitzt, son dern sich beim Erwärmen zersetzt. PATENT CLAIM: Process for the preparation of a new derivative of an aldehyde, characterized in that p-acetylamino-benzoic acid is allowed to act on formaldehyde, with p- (N-oxymethyl-acetylamino) -benzoic acid being formed. The product of the process is a colorless, microcrystalline powder that does not have a defined melting point, but instead decomposes when heated. Es ist schwer löslich in Wasser, Äther, Chloroform und Benzol und wenig löslich in Alkohol. In verdünnten Alkalien und in Lösungen von Aminen ist es- leicht löslich. Es soll als Desinfektionsmittel und in Form seiner löslichen Salze zur Bekämpfung von Infektionskrankheiten Verwendung fin den. It is sparingly soluble in water, ether, chloroform and benzene and sparingly soluble in alcohol. It is easily soluble in dilute alkalis and in solutions of amines. It is intended to be used as a disinfectant and in the form of its soluble salts for combating infectious diseases. UNTERANSPRUCH- Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Umsetzung in alkalischem Milieu vornimmt. SUBSTITUTE SHEET method according to claim, characterized in that the reaction is carried out in an alkaline medium.
CH269090D 1948-05-20 1948-05-20 Process for the preparation of a new aldehyde derivative. CH269090A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH269090T 1948-05-20
CH266516T 1948-05-20

Publications (1)

Publication Number Publication Date
CH269090A true CH269090A (en) 1950-06-15

Family

ID=25730897

Family Applications (1)

Application Number Title Priority Date Filing Date
CH269090D CH269090A (en) 1948-05-20 1948-05-20 Process for the preparation of a new aldehyde derivative.

Country Status (1)

Country Link
CH (1) CH269090A (en)

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