ISSN:
1573-8353
Keywords:
azo coupling
;
cyclization
;
p-toluenesulfonic acid, diazoimidazole
;
naphthimidazotriazine
;
benzimidazotriazine
;
imidazotriazine
;
phenols
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Cyclization of azo compounds, synthesized from 5-diazoimidazoles and 2-naphthol or p-substituted phenols, into naphth[2,1-e]imidazo[5,1-c]-1,2,4-triazines and benz[e]imidazo[5,1-c]-1,2,4-triazines occurs only in the presence of p-toluenesulfonic acid. Imidazo[4,5-d]-1,2,3-triazines are also formed in this reaction when an amide substituent is present in the imidazole ring.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02269547
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