Preparation of 2-(2<i>H</i>-Benzotriazol-2-yl)phenols by the Reduction of 2-[(2-Nitrophenyl)azo]phenols with Thiourea<i>S,S</i>-Dioxide
作者:Shigeo Tanimoto、Takayoshi Kamano
DOI:10.1055/s-1986-31733
日期:——
The reduction of 2-[(2-nitrophenyl)azo]phenols 1 with thiourea S,S-dioxide and sodium hydroxide in a mixture of isopropyl alcohol and water at reflux provide, 2-(2H-benzotriazol-2-yl)phenols 3 in excellent yields.