Highly selective catalytic nitration of 1-nitronaphthalene with NO2 to 1,5-dinitronaphthalene over solid superacid SO42−/ZrO2 promoted by molecular oxygen and acetic anhydride under mild conditions

Efficient and high para-selective conversion of toluene with NO2 to para-nitrotoluene in an O2–Ac2O–HβD4 composite catalytic system

“…For such an end, the development of highly efficient heterogeneous catalysts and the search for environmentally benign nitrating agents for the nitration process are considered to be essential. 5 In recent years, various solid acid catalysts were applied to nitrate aromatic compounds. For example, montmorillonite clay, polymetallic oxide and solid superacid were found to be effective for the nitration of simple aromatics such as halobenzenes and toluene.…”

“…For such an end, the development of highly efficient heterogeneous catalysts and the search for environmentally benign nitrating agents for the nitration process are considered to be essential. 5…”