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.
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.
Design of Ionic Liquid 3-Methyl-1-sulfonic Acid Imidazolium Nitrate as Reagent for the Nitration of Aromatic Compounds by <i>in Situ</i> Generation of NO<sub>2</sub> in Acidic Media
作者:Mohammad A. Zolfigol、Ardeshir Khazaei、Ahmad R. Moosavi-Zare、Abdolkarim Zare、Hendrik G. Kruger、Zhila Asgari、Vahid Khakyzadeh、Masoud Kazem-Rostami
DOI:10.1021/jo300137w
日期:2012.4.6
3-Methyl-1-sulfonic acid imidazolium nitrate ([Msim]NO3) as a new Brønsted acidic ionic liquid and nitrating agent was prepared and used for the efficient nitration of aromaticcompounds (even aniline derivatives). The dramatic effect of this reagent by in situ generation of nitrogen dioxide as a radical on aromaticcompounds to give nitroarenes has been studied.
制备了3-甲基-1-磺酸咪唑鎓硝酸盐([Msim] NO 3)作为新型的布朗斯台德酸性离子液体和硝化剂,并将其用于硝化芳族化合物(甚至苯胺衍生物)。已经研究了该试剂通过在自由基化合物上原位生成二氧化氮作为自由基对芳族化合物产生硝基芳烃的巨大作用。