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Allgemeine Basenkatalyse der Orientierung bei Resorcin-Kupplungen. 14. Mitteilung zur Kenntnis der Kupplungsreaktion

✍ Scribed by H. F. Hodson; O. A. Stamm; Hch. Zollinger


Publisher
John Wiley and Sons
Year
1958
Tongue
German
Weight
468 KB
Volume
41
Category
Article
ISSN
0018-019X

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✦ Synopsis


Abstract

Diazo coupling of 4‐phenylazo‐resorcinol takes place in 2‐ or 6‐position, depending on the acidity of the medium. It is shown that this orientation phenomenon is not caused by hydroxyl ion catalysis, but by general base catalysis.

It is probable that the diazo orientation in resorcinol and in m‐phenylenediamine is to be explained on the same mechanistic basis as the orientation in α‐naphthol coupling reactions.


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