Department of Chemistry, School of Science, Bu Ali Sina University, Hamadan, Iran
Аннотация:
Direct nitration of phenols was performed using 1,3-dichloro-5,5-dimethylhydantoin, 1,3-dibromo-5,5-dimethylhydantoin or citric acid/NaNO2 in the presence of wet SiO2 at room temperature.