CH293298A - Process for the preparation of a new phenanthroline quinone. - Google Patents
Process for the preparation of a new phenanthroline quinone.Info
- Publication number
- CH293298A CH293298A CH293298DA CH293298A CH 293298 A CH293298 A CH 293298A CH 293298D A CH293298D A CH 293298DA CH 293298 A CH293298 A CH 293298A
- Authority
- CH
- Switzerland
- Prior art keywords
- new
- preparation
- carried out
- phenanthroline
- formula
- Prior art date
Links
Landscapes
- Nitrogen Condensed Heterocyclic Rings (AREA)
Description
verfahren zur Herstellung eines neuen Phenanthrolinehinons. Cregenstand des vorliegenden Patentes ist ein Verfahren zur Herstellung eines neuen Phenanthrolinchinons, welches dadurch ge- kennzeiehnet ist, dass man eine Verbindung der Formel
EMI0001.0006
worin X einen durch Oxydation in eine Oxo- gruppe überführbaren Substituenten,
wie eine freie oder verätherte Oxygruppe oder eine freie oder acylierte Aminogruppe, darstellt, mit Salpetersäure oxydiert.
Das so erhaltene 4,7-Phenanthrolin-5,6-chi- non der Formel
EMI0001.0018
ist neu und schmilzt bei 295 . Es besitzt eine amoebicide Wirkung und soll als Heilmittel oder als Zwisehenprodukt zur Herstellung von Heilmitteln verwendet werden.
Die Oxydation mit Salpetersäure wird vor zugsweise in Gegenwart von Sehwefelsäure bei erhöhter Temperatur, z. B: 50 bis 150 , durch geführt.
<I>Beispiel:</I> 2 Gewichtsteile 6-Methoxy-4,7-phenanthro- lin werden mit 1.0 Volumteilen konz. Schwefel- säure und unter Kühlung mit Eis-Kochsalz- Mischung mit 6 Volumteilen rauchender Sal petersäure (d =<B>1,51)</B> versetzt und während zwei Stunden auf 120 erhitzt.
Man bringt die Reaktionslösung auf Eis, stellt mit 10n-Na- tronlauge auf pg 7, nutscht nach zwei Stunden Stehen von dem ausgefallenen Niederschlag ab und spült mit heissem Wasser nach. Nach Umkristallisation aus Methylalkohol und. Trocknung bei 100 /0,1 mm erhält man das 4,7-Phenanthrolin-5,6-chinon in schwach gel ben Kristallen vom F. - 295 ; Formel:
EMI0001.0036
process for the production of a new Phenanthrolinehinons. The present patent relates to a process for the preparation of a new phenanthrolinequinone, which is characterized in that a compound of the formula
EMI0001.0006
where X is a substituent which can be converted into an oxo group by oxidation,
such as a free or etherified oxy group or a free or acylated amino group, is oxidized with nitric acid.
The 4,7-phenanthroline-5,6-quinon of the formula obtained in this way
EMI0001.0018
is new and melts at 295. It has an amoebicidal effect and is said to be used as a medicinal product or as an intermediate product for the manufacture of medicinal products.
The oxidation with nitric acid is preferably carried out in the presence of sulfuric acid at an elevated temperature, e.g. B: 50 to 150, carried out.
<I> Example: </I> 2 parts by weight of 6-methoxy-4,7-phenanthro- lin are concentrated with 1.0 parts by volume. Sulfuric acid and while cooling with an ice-common salt mixture, 6 parts by volume of fuming nitric acid (d = 1.51) are added and the mixture is heated to 120 for two hours.
The reaction solution is placed on ice, adjusted to pg 7 with 10N sodium hydroxide solution, and after standing for two hours, the precipitate is filtered off with suction and rinsed with hot water. After recrystallization from methyl alcohol and. Drying at 100 / 0.1 mm gives 4,7-phenanthroline-5,6-quinone in pale yellow crystals from F. - 295; Formula:
EMI0001.0036
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH293298T | 1950-05-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH293298A true CH293298A (en) | 1953-09-15 |
Family
ID=4488118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH293298D CH293298A (en) | 1950-05-05 | 1950-05-05 | Process for the preparation of a new phenanthroline quinone. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH293298A (en) |
-
1950
- 1950-05-05 CH CH293298D patent/CH293298A/en unknown
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