51705-74-9Relevant academic research and scientific papers
DIAZO COMPOUNDS OF THE HETEROCYCLIC SERIES. 4. SOME PECULIARITIES OF THE DIAZO COUPLING OF BENZIMIDAZOLE-2-DIAZONIUM SALTS WITH PHENOLS AND THEIR ETHERS
Kolodyazhnaya, S. N.,Divaeva, L. N.,Sogomonova, R. A.,Simonov, A. M.
, p. 538 - 543 (2007/10/02)
The corresponding hydroxy (methoxy)-substituted azobenzimidazoles were obtained by diazo coupling of benzimidazole-2-diazonium salts with phenols and their complete and incomplete ethers in strongly acidic media; in the case of phenol ethers the process is complicated by dealkylation of the methoxy group in the ortho position relative to the diazo bridge.
THE SIMPLEST ARENES AS AZO COMPONENTS
Sogomonova, R. A.,Simonov, A. M.,Kolodyazhnaya, S. N.,Divaeva, L. N.
, p. 2008 - 2013 (2007/10/02)
During azo coupling of benzene and its homologs with 2-benzimidazolediazonium salts, which occurs in the presence of concentrated sulfuric acid, toluene and ortho- and meta-xylenes form mixtures of structurally isomeric azo compounds.Activation of the dia
