Metal-Free Oxidation of Urazole and 1,4-Dihydropyridine Derivatives Under Mild and Heterogeneous Conditions by Nitro Urea, Derived from Urea Nitrate, and Silica Sulfuric Acid
CARBATEAS P. M.; WILLIAMS G. L., J. HETEROCYCL. CHEM. <JHTC-AD> 1974, 11, NO 5, 819-821
作者:CARBATEAS P. M.、 WILLIAMS G. L.
DOI:——
日期:——
Metal-Free Oxidation of Urazole and 1,4-Dihydropyridine Derivatives Under Mild and Heterogeneous Conditions by Nitro Urea, Derived from Urea Nitrate, and Silica Sulfuric Acid
作者:Arash Ghorbani-Choghamarani、Mohammad A. Zolfigol、Maryam Hajjami、Shahrbanoo Rastgoo、Shadpour Mallakpour
DOI:10.2174/157017810791112450
日期:2010.4.1
Mild combination of nitro urea, derived from urea nitrate, and silica sulfuric acid (SiO2OSO3H) might act as an efficient oxidizing media, which could be able to oxidize different types of heterocyclic compounds including urazoles and 1,4-dihydropyridines. The process presented here is operationally simple, environmentally benign, and reactions have been mildly carried out in dichloromethane at room temperature.