CH191418A - Process for the preparation of 4'-oxyphenyl-4-aminopyrene. - Google Patents

Process for the preparation of 4'-oxyphenyl-4-aminopyrene.

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Publication number
CH191418A
CH191418A CH191418DA CH191418A CH 191418 A CH191418 A CH 191418A CH 191418D A CH191418D A CH 191418DA CH 191418 A CH191418 A CH 191418A
Authority
CH
Switzerland
Prior art keywords
aminopyrene
oxyphenyl
preparation
oxypyrene
aminobenzene
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 CH191418A publication Critical patent/CH191418A/en

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

Description

  

  Verfahren zur Herstellung von     V-Ogyphenyl-4-aminopyren.       Gemäss dem im Hauptpatent beschriebenen  Verfahren erhält man das     4'-Oxyphenyl-3-          aminopyren,    wenn man     3-Oxypyren    mit     1-Oxy-          4-aminobenzol    in Gegenwart von     Bisulfitlauge     bei Temperaturen von etwa 130-170   C  kondensiert.  



  Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Herstellung von     4'-Oxy-          phenyl-4-aminopyren,    welches dadurch ge  kennzeichnet ist, dass man     4-Oxypyren    mit       1-Oxy-4-aminobenzol    in Gegenwart von     Bisul-          fitlauge    bei Temperaturen von etwa<B>130</B> bis  <B>1700</B> C und in Gegenwart eines erheblichen  Überschusses des genannten     Aminophenols     behandelt.  



       Beispiel:     2 Teile     4-Oxypyren    werden mit 4,4 Teilen       1-Oxy-4-aminobenzol,    20 Volumenteilen     Bisul-          fitlauge    (30   BA) und 1,2 Teilen Natrium  sulfit 38 Stunden auf<B>160-1700</B> erhitzt,  nach dem     Abfiltrieren    mit heissem Wasser  extrahiert, in Natronlauge mit etwas Hydro-         sulfit    gelöst, mit     Bisulfit    gefällt und mit  Benzol extrahiert. Das hellgelbe Reaktions  produkt zeigt keinen bestimmten Schmelz  punkt und wird beim Stehen an der Luft  schwarzblau. Es dient als Zwischenprodukt  für die Herstellung von Farbstoffen.



  Process for the preparation of V-ogyphenyl-4-aminopyrene. According to the process described in the main patent, 4'-oxyphenyl-3-aminopyrene is obtained when 3-oxypyrene is condensed with 1-oxy-4-aminobenzene in the presence of bisulfite liquor at temperatures of about 130-170 ° C.



  The subject of the present patent is a process for the preparation of 4'-oxyphenyl-4-aminopyrene, which is characterized in that 4-oxypyrene with 1-oxy-4-aminobenzene in the presence of bisulfite liquor at temperatures of about <B> 130 </B> to <B> 1700 </B> C and treated in the presence of a substantial excess of said aminophenol.



       Example: 2 parts of 4-oxypyrene are mixed with 4.4 parts of 1-oxy-4-aminobenzene, 20 parts by volume of bisulfite liquor (30 BA) and 1.2 parts of sodium sulfite for 38 hours to 160-1700 heated, after filtering off extracted with hot water, dissolved in sodium hydroxide solution with a little hydrosulfite, precipitated with bisulfite and extracted with benzene. The light yellow reaction product shows no particular melting point and turns black-blue when standing in air. It is used as an intermediate in the manufacture of dyes.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von 4'-Oxy- phenyl-4-aminopyren,dadurch gekennzeichnet, dass man 4-Oxypyren mit 1-Oxy-4-aminobenzol in Gegenwart von Bisulfitlauge bei Tempe raturen von etwa<B>130-1700</B> und in Gegen wart eines erheblichen Überschusses des genannten Aminophenols behandelt. Das Produkt zeigt keinen bestimmten Schmelz punkt. Es ist hellgelb, färbt sich aber beim Stehen an der Luft schwarzblau. PATENT CLAIM: A process for the production of 4'-oxyphenyl-4-aminopyrene, characterized in that 4-oxypyrene is mixed with 1-oxy-4-aminobenzene in the presence of bisulfite lye at temperatures of about 130-1700. B> and treated in the presence of a substantial excess of said aminophenol. The product does not show a specific melting point. It is light yellow, but turns black-blue when standing in the air.
CH191418D 1934-11-09 1935-09-13 Process for the preparation of 4'-oxyphenyl-4-aminopyrene. CH191418A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE191418X 1934-11-09
CH185670T 1935-09-13

Publications (1)

Publication Number Publication Date
CH191418A true CH191418A (en) 1937-06-15

Family

ID=25721239

Family Applications (1)

Application Number Title Priority Date Filing Date
CH191418D CH191418A (en) 1934-11-09 1935-09-13 Process for the preparation of 4'-oxyphenyl-4-aminopyrene.

Country Status (1)

Country Link
CH (1) CH191418A (en)

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