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Azo coupling of benzenesulfonylhydrazones of heterocyclic aldehydes
Author(s) -
Shawali A. S.,
Fahmi A. A.,
Eweiss N. F.
Publication year - 1979
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570160123
Subject(s) - chemistry , aldehyde , moiety , substituent , yield (engineering) , dissociation (chemistry) , organic chemistry , catalysis , materials science , metallurgy
The reaction of aldehyde phenylsulfonylhydrazones (VII‐XI) with diazotized aromatic and heterocyclic primary amines gave the tetrazoles (XIV‐XIX). The yield of the tetrazoles was found to depend to some extent on the nature of the substituent present in the aldehyde moiety. The structures of the tetrazoles obtained was established on the basis of their analytical and spectral data. A tentative explanation for their formation is proposed. The acid dissociation constants of the tetrazoles (XIV) were also determined.