DOI: 10.1070/MC1998v008n05ABEH001024
(Paper)
Mendeleev Commun., 1998, 8, 197-198
The first example of reversible C-azo coupling in a series of aromatic and heteroaromatic compounds
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Vladimir S. Mokrushin and Maxim A. Bezmaternikh
Abstract
Heating of imidazolyl- and phenylazo-naphthols in acetic acid in the presence of p-toluenesulfonic acid and dimethylaniline yields imidazolyl- and phenyl-(p-dimethylamino)azobenzenes, which suggests the intermediacy of the corresponding diazo compounds.