CH150171A - Process for the preparation of 2-amidophenanthridone. - Google Patents

Process for the preparation of 2-amidophenanthridone.

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Publication number
CH150171A
CH150171A CH150171DA CH150171A CH 150171 A CH150171 A CH 150171A CH 150171D A CH150171D A CH 150171DA CH 150171 A CH150171 A CH 150171A
Authority
CH
Switzerland
Prior art keywords
preparation
amidophenanthridone
sulfuric acid
acid
amidofluorenone
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie 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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH150171A publication Critical patent/CH150171A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Darstellung von     2-Amidophenanthridon.       Gegenstand vorliegender Erfindung ist  ein Verfahren zur Darstellung von     2-Amido-          phenanthridon,    dadurch gekennzeichnet, dass  man auf     2-Amidofluorenon        Stickstoffwasser-          stoffsäure    in Gegenwart von Schwefelsäure  einwirken lässt.  



  Der neue Körper     soll    als Zwischenprodukt  zur Darstellung von Farbstoffen und pharma  zeutischen Präparaten verwendet werden.  



  <I>Beispiel:</I>  Eine Lösung von<B>19,2</B> Gewichtsteilen des  violetten     2-Aminofluorenons    in 150     Volum-          teilen    konzentrierter Schwefelsäure, die mit  <B>150</B>     Volumteilen    Benzol     überschichtet    ist,  wird mit 100     Volumteilen    einer     2n-Lösung     von     N3H    in Benzol zur Reaktion gebracht.  Ausbeute 94% der Theorie an aus Anilin in    farblosen     Nädelchen    kristallisierendem 2  Amidophenanthridou, das den     Fp.    285-286         unkorr.    zeigt und sich in konzentrierter  Schwefelsäure farblos löst.



  Process for the preparation of 2-amidophenanthridone. The present invention relates to a process for the preparation of 2-amidophenanthridone, characterized in that 2-amidofluorenone is allowed to act on hydrazoic acid in the presence of sulfuric acid.



  The new body is to be used as an intermediate product for the preparation of dyes and pharmaceutical preparations.



  <I> Example: </I> A solution of <B> 19.2 </B> parts by weight of the violet 2-aminofluorenone in 150 parts by volume of concentrated sulfuric acid overlaid with <B> 150 </B> parts by volume of benzene , is reacted with 100 parts by volume of a 2N solution of N3H in benzene. Yield 94% of theory of 2 amidophenanthridou crystallizing from aniline in colorless needles, which has the melting point 285-286 uncorr. shows and dissolves colorless in concentrated sulfuric acid.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von 2-Amido- phenanthridon, dadurch gekennzeichnet, dass man auf 2-Amidofluorenon Stickstoffwass.er- stoffsäure in Gegenwart von Schwefelsäure einwirken lässt. Das Produkt kristallisiert aus Anilin in farblosen, in konzentrierter Schwefelsäure farblos löslichen Nädelchen vom Fp. 285 bis 286 unkorr. PATENT CLAIM: Process for the preparation of 2-amidophenanthridone, characterized in that hydrazoic acid is allowed to act on 2-amidofluorenone in the presence of sulfuric acid. The product crystallizes from aniline in colorless needles which are colorlessly soluble in concentrated sulfuric acid and have a melting point of 285 to 286 uncorr.
CH150171D 1929-03-01 1930-02-21 Process for the preparation of 2-amidophenanthridone. CH150171A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE150171X 1929-03-01
CH147794T 1930-02-21

Publications (1)

Publication Number Publication Date
CH150171A true CH150171A (en) 1931-10-15

Family

ID=25715072

Family Applications (1)

Application Number Title Priority Date Filing Date
CH150171D CH150171A (en) 1929-03-01 1930-02-21 Process for the preparation of 2-amidophenanthridone.

Country Status (1)

Country Link
CH (1) CH150171A (en)

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