CH154407A - 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
CH154407A
CH154407A CH154407DA CH154407A CH 154407 A CH154407 A CH 154407A CH 154407D A CH154407D A CH 154407DA CH 154407 A CH154407 A CH 154407A
Authority
CH
Switzerland
Prior art keywords
new
green
phenol
preparation
gray
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 CH154407A publication Critical patent/CH154407A/en

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

Description

  

      Terfahren    zur Darstellung eines neuen     Thlophenolderivates.       Es wurde gefunden,     dass    man zu einem  neuen     Thioderivat    des Phenols gelangen kann,  wenn man Phenol mit     Kaliumbichromat    in  Gegenwart von     Natriumhydroxyd    und Schwe  fel erhitzt.  



  <I>Beispiel:</I>  46 Teile Phenol, 20 Teile     Natriumhydro-          xyd,   <B>30</B> Teile Schwefel, 20 Teile     Kaliumbi-          ehromat    und<B>50</B> Teile Wasser werden innig  vermischt und<B>30</B> Stunden am     Rückflusskühler     auf<B>107- 108 "</B> erhitzt. Man erhält eine dunkel  grün gefärbte dicke Masse, welche nach dem  Erkalten sehr hart wird und leicht gepulvert  werden kann.  



  Das so erhaltene grüne Pulver ist in  Wasser und Äthylalkohol mit grüner Farbe  leicht, in Aceton dagegen fast unlöslich. Auf  Zusatz von verdünnter Schwefelsäure zu einer  verdünnten Lösung des Produktes wird ein  brauner Niederschlag erhalten; auf Zusatz  von organischen Säuren werden trüb grün-    graue Flocken erhalten; mit     Ferrichlorid    re  sultiert ein     bräunlichgrauer    Niederschlag.  



  Das neue     ehromhaltige    Produkt besitzt  stark gerbende Eigenschaften.



      To present a new thlophenol derivative. It has been found that a new thio derivative of phenol can be obtained by heating phenol with potassium dichromate in the presence of sodium hydroxide and sulfur.



  <I> Example: </I> 46 parts of phenol, 20 parts of sodium hydroxide, <B> 30 </B> parts of sulfur, 20 parts of potassium dichromate and <B> 50 </B> parts of water are intimately mixed and Heated to <B> 107-108 "for <B> 30 </B> hours on the reflux condenser. A thick, dark green-colored mass is obtained which, after cooling, becomes very hard and can be easily powdered.



  The green powder thus obtained is light green in water and ethyl alcohol, but almost insoluble in acetone. When dilute sulfuric acid is added to a dilute solution of the product, a brown precipitate is obtained; when organic acids are added, cloudy green-gray flakes are obtained; With ferric chloride a brownish-gray precipitate results.



  The new Ehrom-containing product has strong tanning properties.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen Thioderivates des Phenols, dadurch gekenn zeichnet, dass man Phenol mit Kaliumbichro- mat in Gegenwart von Natriumhydroxyd und Schwefel erhitzt. Das erhaltene grüne Pulver ist in Wasser und Äthylalkohol mit grüner Farbe leicht, in Aceton dagegen fast nicht löslich. Auf Zusatz von verdünnter Schwefelsäure zu einer verdünnten Lösung des Produktes wird ein brauner Niederschlag erhalten; auf Zusatz von organischen Säuren werden trüb grün graue Flocken erbalten; mit Ferrichlorid re sultiert ein bräunlichgrauer Niederschlag. PATENT CLAIM: Process for preparing a new thio derivative of phenol, characterized in that phenol is heated with potassium bichromate in the presence of sodium hydroxide and sulfur. The green powder obtained is slightly green in water and ethyl alcohol, but almost insoluble in acetone. When dilute sulfuric acid is added to a dilute solution of the product, a brown precipitate is obtained; the addition of organic acids turns cloudy green-gray flakes; With ferric chloride a brownish-gray precipitate results. Das neue ehromhaltige Produkt besitzt stark gerbende Eigenschaften.<B>-</B> The new Ehrom-containing product has strong tanning properties. <B> - </B>
CH154407D 1929-10-19 1930-10-17 Process for the preparation of a new thiophenol derivative. CH154407A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE154407X 1929-10-19
DE564215T 1930-08-02
CH150920T 1930-10-17

Publications (1)

Publication Number Publication Date
CH154407A true CH154407A (en) 1932-04-30

Family

ID=27767633

Family Applications (1)

Application Number Title Priority Date Filing Date
CH154407D CH154407A (en) 1929-10-19 1930-10-17 Process for the preparation of a new thiophenol derivative.

Country Status (1)

Country Link
CH (1) CH154407A (en)

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