One-pot oxidative Ugi-type three-component reaction of aromatic hydrocarbons of petroleum naphtha: comparing catalytic effect of cellulose- and wool–SO<sub>3</sub>H supported with manganese dioxide nanostructures
作者:Ahmad Shaabani、Zeinab Hezarkhani、Elham Badali
DOI:10.1039/c5ra16608j
日期:——
investigated with aromatic hydrocarbons of petroleum naphtha using two biopolymer supported MnO2 nanostructured catalysts, MnO2@cellulose–SO3H and MnO2@wool–SO3H, for the synthesis of α-amino amides, 3,4-dihydroquinoxalin-2-amine, 4H-benzo[b][1,4]thiazin-2-amine, and cyanophenylamino-acetamide derivatives. Nano-MnO2@cellulose–SO3H and nano-MnO2@wool–SO3H were used as biodegradable oxidation and solid acid
cyclohexyl isocyanide in methanol at room temperature is described. The N-cyclohexyl-2-(2-hydroxyphenylamino) amide products are obtained in high yields. When N,N-dimethylformamidedimethylacetal and triethyl orthoformate, as two new components of the three-component Ugi reaction are used instead of the aldehyde the reaction gives N-cyclohexyl-2-(dimethylamino)-2-(2-hydroxyphenylamino)acetamide and N-cyclo