Silica Sulfuric Acid/ NaNO2 as a Novel Heterogeneous System for the Nitration of Phenols under Mild Conditions
作者:Mohammad Zolfigol、Elahe Madrakian、Ezat Ghaemi
DOI:10.3390/71000734
日期:——
Nitrophenols can be obtained in moderate to high yields via nitrosationoxidation of phenols with silica sulfuric acid, NaNO2 and wet SiO2 at room temperature. In situ generation of HNO2 and a radical cation mechanism via the nitrous acid catalyzed (NAC) pathway appear to be applicable to phenol nitration using these reagents.
Nitration Of Phenols Under Mild And Heterogeneous Conditions
作者:Mohammad Zolfigol、Ezat Ghaemi、Elahe Madrakian
DOI:10.3390/60700614
日期:——
Nitrophenols can be obtained in moderate to high yields using a combination of Mg(HSO4)2 or NaHSO4.H2O, NaNO3 and wet SiO2 in dichloromethane at room temperature.
Trichloroisocyanuric Acid/NaNO<sub>2</sub>as a Novel Heterogeneous System for the Selective Mononitration of Phenols under Mild Conditions
作者:Mohammad Ali Zolfigol、Ezat Ghaemi、Elaheh Madrakian
DOI:10.1055/s-2003-36791
日期:——
Nitrophenols can be obtained via direct nitration of phenols with trichloroisocyanuric acid, NaNO2 and wet SiO2 at room temperature in moderate to high yields.