CH162357A - Method for the preparation of a strongly basic porphine. - Google Patents
Method for the preparation of a strongly basic porphine.Info
- Publication number
- CH162357A CH162357A CH162357DA CH162357A CH 162357 A CH162357 A CH 162357A CH 162357D A CH162357D A CH 162357DA CH 162357 A CH162357 A CH 162357A
- Authority
- CH
- Switzerland
- Prior art keywords
- porphine
- strongly basic
- preparation
- new
- pyrroporphyrin
- Prior art date
Links
Description
Verfahren zur Darstellung eines starkbasischen Porphins. Das vorliegende Verfahren betrifft die Dar stellung eines starkbasischen Porphins und ist dadurch gekennzeichnet, dass man Pyrropor- phyrinmonomethylester mit asymmetrischem Diaethylaminoäthylendiamin behandelt.
<I>Beispiel:</I> 1 gr Pyrroporphyrinmonomethylester wird zusammen mit 5 cm-' asymmetrischem Di- äthylaminoaethylendiamin in der Silberhülse im Einschlussrohr 5 Stunden lang auf 180 erhitzt, wobei die Bildung des neuen Porphins unter Abspaltung von Methylalkohol statt findet.
Der Rohrinhalt wird mit Chloroform aufgenommen, filtriert und unter Zusatz von Methanol eingeengt, bis der Chloroformgeruch verschwunden ist. , Dann kristallisiert das Reaktionsprodukt in schönen prismatischen Nadeln vom korr. Smp. 211' (unzersetzt) aus. Zur Analyse wurde das Präparat nach mehr facher Umkristallisation aus einem Gemisch von Chloroform und Methanol im Hochva kuum bei<B>250</B> zur Gewichtskonstanz ge trocknet.
Ber. für C37H48N60 C<B>74,950/.</B> H<B>8,160/,</B> Gef. C 75,15"/o H 7,85"/o Das neue starkbasische Porphin stellt einen dunkelrotbraunen Farbstoff dar, dessen Basizität so gross ist, dass er einer ätherischen Lösung mit beliebig schwachen Säuren quan titativ entnommen werden kann. Die Lösung seiner Salze mit starken Säuren in Wasser reagiert neutral und zeigt Neutralspektrum.
Die Analyse_bestätigt das Vorliegen eines von Pyrroporphyrinester verschiedenen, neuen Porphins.
Method for the preparation of a strongly basic porphine. The present method relates to the presentation of a strongly basic porphine and is characterized in that pyrroporphyrin monomethyl ester is treated with asymmetric diaethylaminoethylenediamine.
<I> Example: </I> 1 gram of pyrroporphyrin monomethyl ester is heated to 180 for 5 hours together with 5 cm- 'asymmetrical diethylaminoethylenediamine in the containment tube, with the formation of the new porphins with elimination of methyl alcohol.
The contents of the tube are taken up with chloroform, filtered and concentrated with the addition of methanol until the chloroform odor has disappeared. Then the reaction product crystallizes in beautiful prismatic needles from the corr. M.p. 211 '(undecomposed). For analysis, after recrystallization several times from a mixture of chloroform and methanol, the preparation was dried to constant weight in a high vacuum at <B> 250 </B>.
Ber. for C37H48N60 C <B> 74.950 /. </B> H <B> 8.160 /, </B> Gef. C 75.15 "/ o H 7.85" / o The new strongly basic porphine is a dark red-brown dye, Its basicity is so great that it can be quantitatively taken from an ethereal solution with any weak acid. The solution of its salts with strong acids in water reacts neutrally and shows a neutral spectrum.
The analysis confirms the presence of a new porphine other than pyrroporphyrin esters.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH158834T | 1931-12-22 | ||
CH162357T | 1931-12-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH162357A true CH162357A (en) | 1933-06-15 |
Family
ID=25717168
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH162357D CH162357A (en) | 1931-12-22 | 1931-12-22 | Method for the preparation of a strongly basic porphine. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH162357A (en) |
-
1931
- 1931-12-22 CH CH162357D patent/CH162357A/en unknown
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