118-02-5Relevant articles and documents
An improved synthesis of styphnic acid.
Kametani,Ogasawara
, p. 893 - 893 (1967)
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Synthesis of 1,6-dihydro-1,6-dihydroxybenzo[1,2-d:3,4-d′]bistriazole, 4- and 5-nitro-1,6-dihydro-1,6-dihydroxybenzo[1,2-d:3,4-d′]bistriazole and 4,7-dihydro-1,4,7-trihydroxy-1H-benzo-[1,2-d:3,4-d′:5,6-d″] tris[1,2,3]triazole
Samsonov,Gatilov
, p. 1776 - 1782 (2013/11/19)
1,6-Dihydro-1,6-dihydroxybenzo[1,2-d:3,4-d′]bistriazole and 4- and 5-nitro-1,6-dihydro-1,6-dihydroxybenzo[1,2-d:3,4-d′]bistriazole were synthesized starting from 2,4-dinitrosore-sorcinol, whereas 4,7-dihydro-1,4,7- trihydroxy-1H-benzo[1,2-d:3,4-d′:5,6-d″]tris[1,2,3]-triazole was synthesized starting from phloroglucinol. The reaction of trinitrosophloroglucinol with hydrazine hydrate in acetic acid led to 2,4,6-tridiazocyclohexane-1,3,5-trione.
Reactivity of nitrite with 2-chlorophenol, t-butyl phenol and resorcinol in mild acidic conditions
De La Breteche, Marie-Laure,Billion, Marie-Annick,Ducrocq, Claire
, p. 973 - 977 (2007/10/03)
The influence of ionic strength, pH, oxygen, organic solvents and nitrite concentration on the kinetics and the regioselectivity of 2-chlorophenol nitration by nitrous acid to form 4-nitro and 6-nitro derivatives was studied. There was quantitative para substitution at pH 3.5 in the absence of oxygen using 3 equiv of nitrite. In acetate-buffered solution, 4-t-butylphenol gave 90% 2-nitro-4-t-butylphenol, and resorcinol gave 85% 2,4-dinitrosoresorcinol. Nitration proceeded via nitrosation followed by oxidation of the nitroso intermediate into the corresponding nitro derivative. Oxidation could be due to reduction of nitrous acid to nitric oxide. The possibility that the reaction proceeds via radical formation, with which NO2 and NO interfere, is discussed. Elsevier,.
