Amination, Acetamidation, and Amidation of Substituted Aromatic Carbamates in Polyphosphoric Acid
作者:A. V. Velikorodov、E. N. Kutlalieva、N. N. Stepkina、E. A. Shustova、O. Yu. Poddubny
DOI:10.1134/s1070428020090110
日期:2020.9
respect to the hydroxy or methoxy group. The reactions of methylN-(4-methoxyphenyl)carbamate with nitromethane and nitroethane in 80% PPA at 95–110°C gave methylN-(3-carbamoyl-4-methoxyphenyl)carbamate and methylN-(3-acetamido-4-methoxyphenyl)carbamate, respectively. MethylN-[4-(N′-hydroxyethanimidamido)phenyl]carbamate was obtained by reaction of 4-[(methoxycarbonyl)amino]benzoic acid with excess nitroethane