Widman, Chemische Berichte, 1896, vol. 29, p. 1951
作者:Widman
DOI:——
日期:——
One-Pot Synthesis of N-Monosubstituted Ureas from Nitriles via Tiemann Rearrangement
作者:Tun-Cheng Chien、Chien-Hong Wang、Tsung-Han Hsieh、Chia-Chi Lin、Wen-Hsiung Yeh、Chih-An Lin
DOI:10.1055/s-0034-1381007
日期:——
Amidoximes, obtained from the reaction of nitriles with hydroxylamine, underwent Tiemann rearrangement in the presence of benzenesulfonyl chlorides (TsCl or o-NsCl) to form the N-substituted cyanamides. Subsequently, acidic hydrolysis of the cyanamides afforded the corresponding N-monosubstituted ureas. The synthesis of N-monosubstituted ureas from nitriles was accomplished by three steps in one pot