CH191419A - Process for the preparation of 2'-oxyphenyl-3-aminopyrene. - Google Patents
Process for the preparation of 2'-oxyphenyl-3-aminopyrene.Info
- Publication number
- CH191419A CH191419A CH191419DA CH191419A CH 191419 A CH191419 A CH 191419A CH 191419D A CH191419D A CH 191419DA CH 191419 A CH191419 A CH 191419A
- Authority
- CH
- Switzerland
- Prior art keywords
- aminopyrene
- preparation
- oxy
- oxyphenyl
- temperatures
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung von 2'-Ogyplienyl-3-aminopyren. Gemäss dem im Hauptpatent beschriebenen Verfahren erhält man das 4'-Oxypheriyl-3- aminopyren, wenn man 3-Oxypyren mit 1-Oxy-4-aminobenzol in Gegenwart von Bisul- fitlauge bei Temperaturen von etwa 130 bis <B>1700</B> C kondensiert.
Gegenstand des vorliegenden Patentes ist ein Verfahren zur Herstellung von 2'-Oxy- plieriy 1-3-auiinopyren, welches dadurch ge kennzeichnet ist, dass man 3-Aminopyren mit 1-Oxy-2-aminobenzol in Gegenwart von Bisulfitlauge auf Temperaturen von etwa <B>130-1700</B> C und in Gegenwart eines erheb lichen Überschusses des genannten Arnino- phenols erhitzt.
<I>Beispiel:</I> 10,5 Teile 3-Aminopyren werden mit 22 Teilen 1-Oxy-2-aminobenzol, 6,6 Teilen Natriumsulfit und 100 Volumenteilen Bisulfit- laiige <B>(30'</B> B6) 40 Stunden auf<B>130-1500</B> erhitzt. Nach dem Absaugen wird mit heissem Wasser gewascben, in verdünnter Natron lauge unter Zusatz von etwas Hydrosulfit gelöst und mit Bisulfit gefällt.
Das hellgelbe Kondensationsprodukt Färbt sich beim Stehen an der Luft braunolive. Es dient als Zwischen produkt für die Herstellung von Farbstoffen.
Process for the preparation of 2'-ogyplienyl-3-aminopyrene. According to the process described in the main patent, 4'-oxypheriyl-3-aminopyrene is obtained when 3-oxypyrene is mixed with 1-oxy-4-aminobenzene in the presence of bisulfite liquor at temperatures from about 130 to 1700 > C condensed.
The subject of the present patent is a process for the preparation of 2'-Oxy- plieriy 1-3-auiinopyrene, which is characterized in that 3-aminopyrene with 1-oxy-2-aminobenzene in the presence of bisulfite liquor to temperatures of about < B> 130-1700 </B> C and heated in the presence of a considerable excess of said aminophenol.
<I> Example: </I> 10.5 parts of 3-aminopyrene are mixed with 22 parts of 1-oxy-2-aminobenzene, 6.6 parts of sodium sulfite and 100 parts by volume of bisulfite-flaky <B> (30 'B6 ) Heated to <B> 130-1500 </B> for 40 hours. After suctioning off, it is washed with hot water, dissolved in dilute sodium hydroxide solution with the addition of some hydrosulfite and precipitated with bisulfite.
The light yellow condensation product turns brown-olive when standing in air. It serves as an intermediate product for the manufacture of dyes.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE191419X | 1934-11-09 | ||
| CH185670T | 1935-09-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH191419A true CH191419A (en) | 1937-06-15 |
Family
ID=25721240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH191419D CH191419A (en) | 1934-11-09 | 1935-09-13 | Process for the preparation of 2'-oxyphenyl-3-aminopyrene. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH191419A (en) |
-
1935
- 1935-09-13 CH CH191419D patent/CH191419A/en unknown
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