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Zur Konstitution des Randenfarbstoffes Betanin. 2. (vorläufige) Mitteilung

✍ Scribed by H. Wyler; G. Vincenti; M. Mercier; G. Sassu; André S. Dreiding


Publisher
John Wiley and Sons
Year
1959
Tongue
German
Weight
192 KB
Volume
42
Category
Article
ISSN
0018-019X

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✦ Synopsis


Abstract

An empirical formula (C~24~H~28–30~O~13~N~2~) and certain structural features of betanin are reported.

In the beet betanin is accompanied by three related violet compounds.


📜 SIMILAR VOLUMES


Zur Struktur des Betanidins. 6. (vorläuf
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## Abstract A choice between structures I and III for betanidin is now possible in favour of I on the basis of the formation of a well‐characterized di‐O‐acetylderivative (II). The instability of betanidin and its ready transformation into other products at elevated pH's are shown to be due to its

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## Abstract By degrading betanidin with alkali under exclusion of oxygen it was possible to demonstrate the formation of 4‐methylpyridine‐2, 6‐dicarboxylic acid (II), 2, 3‐dihydro‐5, 6‐dihydroxyindole‐2‐carboxylic acid (IV) and formic acid. Compounds II and IV were also found after a treatment with

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