Molybdenum-catalyzed deoxygenative heterocyclization of 2-nitroazobenzenes: a novel strategy for catalytic synthesis of 2-aryl-2<i>H</i>-benzo[<i>d</i>][1,2,3]triazoles
作者:Quanyun Liu、Haoke Chu、Junju Mai、Haobing Yang、Mei-Hua Shen、Hua-Dong Xu
DOI:10.1039/d3ob01969a
日期:——
A novel strategy for the catalytic synthesis of 2-aryl-2H-benzo[d][1,2,3]triazoles bearing a wide range of functional groups in good to excellent yields by non-noble molybdenum-catalyzed deoxygenative heterocyclization of 2-nitroazobenzenes is described. The salient features of the transformation include the use of readily available substrates, valuable products and ease of scale-up. The mechanistic
一种通过非贵重钼催化的2的脱氧杂环化催化合成具有多种官能团的2-芳基-2H-苯并[ d ][1,2,3]三唑的新策略,收率良好至优异描述了-硝基偶氮苯。该转化的显着特点包括使用现成的底物、有价值的产品和易于扩大规模。机理研究表明该反应是通过Mo( VI )/Mo( IV )催化循环从2-硝基偶氮苯进行双重脱氧,形成2-芳基-2H-苯并[ d ][1,2,3 ]三唑-N 1 -氧化物或氮烯中间体。