Silica Sulfuric Acid<b>/</b>NaNO<sub>2</sub>as a Novel Heterogeneous System for the Chemoselective N-Nitrosation<b />of Secondary Amines under Mild Conditions
作者:Mohammad Ali Zolfigol、Abdolhamid Bamoniri
DOI:10.1055/s-2002-34230
日期:——
Neat chlorosulfonic acid reacts with silicagel to give silica sulfuric acid in which sulfuric acid is immobilized on the surface of silicagel via a covalent bond. A combination of silica sulfuric acid and sodium nitritein the presence of wet SiO 2 was used as an effective nitrosating agent for the nitrosation of secondaryamines to their corresponding nitroso derivatives under mild and heterogeneous
Alumina–Methanesulfonic Acid (AMA)/NaNO<sub>2</sub>as an Efficient Procedure for the Chemoselectivite N‐Nitrosation of Secondary Amines
作者:Khodabakhsh Niknam、Mohammad Ali Zolfigol
DOI:10.1080/00397910600639927
日期:2006.8
A combination of alumina/methanesulfonic acid (AMA) and sodium nitrite was used as an effective nitrosating agent for the nitrosation of secondary amines under mild and heterogeneous conditions in good to excellent yields.
Efficient procedure for chemoselective N-nitrosation of secondary amines with trichloromelamine-NaNO2
作者:A. Bamoniri、M. A. Zolfigol、B. F. Mirjalili、F. Fallah
DOI:10.1134/s1070428007090229
日期:2007.9
A combination of trichloromelamine and sodium nitrite in the presence of wet silica gel was used as an effective nitrosating, agent for the transformation of secondary amines into the corresponding N-nitroso derivatives under mild and heterogeneous conditions in good to excellent yields.