CH154409A - Process for the preparation of a new thiophenol derivative. - Google Patents

Process for the preparation of a new thiophenol derivative.

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Publication number
CH154409A
CH154409A CH154409DA CH154409A CH 154409 A CH154409 A CH 154409A CH 154409D A CH154409D A CH 154409DA CH 154409 A CH154409 A CH 154409A
Authority
CH
Switzerland
Prior art keywords
new
preparation
product
thiophenol derivative
brown
Prior art date
Application number
Other languages
German (de)
Inventor
Sandoz Chemische Fabri Vormals
Original Assignee
Chem Fab Vormals Sandoz
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 Fab Vormals Sandoz filed Critical Chem Fab Vormals Sandoz
Publication of CH154409A publication Critical patent/CH154409A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)

Description

  

  Verfahren zur Darstellung eines     neuen        Thiophenolderivates.       Es wurde gefunden, dass man zu einem neuen       Thiophenolderivat    gelangen kann, "wenn man       Resorcin    mit Chromacetat in Gegenwart von       Natriumhydroxyd    und Schwefel erhitzt.

      <I>Beispiel:</I>    55 Teile     Resorcin,    20 Teile     Natriumhydro-          xyd,    30 Teile Schwefel,     15    Teile Chromacetat       (26%        Cr2Us)        Lind        15        Teile        Wasser        werden     40 Stunden lang auf 1200 erhitzt, die erhaltene  Schmelze im Vakuum eingetrocknet und ge  mahlen.  



  Das so erhaltene dunkelbraune Pulver ist  in Wasser und     Aetbylalkohol    mit rotbrauner  Farbe leicht löslich, währenddem es in  Aceton vollständig unlöslich ist. Auf Zusatz  von verdünnten Mineralsäuren zu einer ver  dünnten Lösung des Produktes wird ein  brauner Niederschlag erhalten; durch Ansäuern  mit organischen Säuren bleibt die Lösung  klar; auf Zusatz von     Ferrichlorid    resultiert  ein     rötlichschwarzer    Niederschlag.    Das neue Produkt besitzt ausgezeichnete  gerbende Eigenschaften.



  Process for the preparation of a new thiophenol derivative. It has been found that a new thiophenol derivative can be obtained "if resorcinol is heated with chromium acetate in the presence of sodium hydroxide and sulfur.

      <I> Example: </I> 55 parts of resorcinol, 20 parts of sodium hydroxide, 30 parts of sulfur, 15 parts of chromium acetate (26% Cr2Us) and 15 parts of water are heated to 1200 for 40 hours, and the resulting melt is dried in vacuo and ground.



  The dark brown powder thus obtained is easily soluble in water and ethyl alcohol with a reddish brown color, while it is completely insoluble in acetone. Upon addition of dilute mineral acids to a dilute solution of the product, a brown precipitate is obtained; the solution remains clear by acidification with organic acids; the addition of ferric chloride results in a reddish black precipitate. The new product has excellent tanning properties.

Claims (1)

PATENTANSPRUCI3 Verfahren zur Darstellung eines neuen Thiophenolderivates, dadurch gekennzeichnet, dass man Resorcin mit Chromacetat in Ge genwart von Natriumhydroxyd und Schwefel erhitzt. Das neue Produkt stellt ein dunkelbraunes Pulver dar, welches in Wasser und Äthyl- alkohol mit rotbrauner Farbe leicht, in Aceton dagegen vollständig unlöslich ist. PATENT CLAIM3 Process for the preparation of a new thiophenol derivative, characterized in that resorcinol is heated with chromium acetate in the presence of sodium hydroxide and sulfur. The new product is a dark brown powder which is slightly red-brown in water and ethyl alcohol, but completely insoluble in acetone. Auf Zusatz von verdünnten Mineralsäuren zu einer ver dünnten Lösung des Produktes resultiert ein brauner Niederschlag; durch Ansäuern mit organischen Säuren bleibt die Lösung klar; auf Zusatz von Ferrichlorid erhält man einen rötlichschwarzen Niederschlag. Das Produkt besitzt ausgezeichnete ger bende Eigenschaften. The addition of dilute mineral acids to a dilute solution of the product results in a brown precipitate; the solution remains clear by acidification with organic acids; on addition of ferric chloride, a reddish black precipitate is obtained. The product has excellent tanning properties.
CH154409D 1929-10-19 1930-10-17 Process for the preparation of a new thiophenol derivative. CH154409A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE154409X 1929-10-19
DE564215T 1930-08-02
CH150920T 1930-10-17

Publications (1)

Publication Number Publication Date
CH154409A true CH154409A (en) 1932-04-30

Family

ID=27767635

Family Applications (1)

Application Number Title Priority Date Filing Date
CH154409D CH154409A (en) 1929-10-19 1930-10-17 Process for the preparation of a new thiophenol derivative.

Country Status (1)

Country Link
CH (1) CH154409A (en)

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