Abstract Zn(NO3)2 · N2O4 and its charcoal supported system were found to be efficient nitrating agents. Mononitration of aromatic compounds such as benzene, alkyl benzenes, halobenzenes, nitrobenzene, anisol, and the highly selective mono‐, di‐, and trinitration of phenol, and dinitraion of substituted phenols were also performed in the presence of these reagents.
PEG-N<sub>2</sub>O<sub>4</sub>: An Efficient Nitrating Agent for the Selective Mono- and Dinitration of Phenols Under Mild Conditions
作者:Mohammad Ali Zolfigol、Elaheh Madrakian、Ezat Ghaemi、Khodabakhsh Niknam
DOI:10.1080/00397910802136706
日期:2008.9.12
was easily impregnated on polyethyleneglycol to give a stable reagent. The polyethyleneglycol-N2O4 (PEG-N2O4) system was used as an effective nitrating agent for the nitration of phenols. Mono- and dinitrophenols can be obtained via direct nitration of phenols in the presence of PEG-N2O4 at room temperature in moderate to high yields.
Ionic Complex of N<sub>2</sub>O<sub>4</sub>with 18-Crown-6: A Highly Efficient and Selective Reagent for Nitration of Phenols
作者:N. Iranpoor、H. Firouzabadi、R. Heydari
DOI:10.1080/00397919908085957
日期:1999.10
gaseous N2O4 with 18-crown-6 affords the stable crystalline complex of NO+·18-crown-6·H(NO3)2. This ionic complex is an efficient nitrating agent for the selective mono-, di-, and trinitration of phenol and also for the selective mono-, and dinitration of substituted phenols.
Silica-Acetate Complex of N<sub>2</sub>O<sub>4</sub>: A Heterogeneous Reagent for the Selective Nitration of Phenols and Nitrosation of Thiols
作者:N. Iranpoor、H. Firouzabadi、R. Heydari
DOI:10.1081/scc-120016310
日期:2003.1.4
Abstract Complexation of gaseous N2O4 with acylated silica gel affords an addition compound, which is an efficient heterogeneous reagent for the selective mono- and dinitration of phenol, substituted phenols and nitrosation of thiols.
Trichloroisocyanuric Acid/NaNO<sub>2</sub>/wet SiO<sub>2</sub>as an Efficient System for the Selective Dinitration of Phenols under Solvent-free Conditions
作者:Mohammad Ali Zolfigol、Elaheh Madrakian、Ezat Ghaemi
DOI:10.1055/s-2003-42063
日期:——
Dinitrophenols can be obtained via direct nitration of phenols with trichloroisocyanuric acid, NaNO2 and wet SiO2 at room temperature under solvent-free conditions with moderate to high yields.