Direct Synthesis of 4-Aryl-1,2,3-triazoles via I<sub>2</sub>-Promoted Cyclization under Metal- and Azide-Free Conditions
作者:Chun Huang、Xiao Geng、Peng Zhao、You Zhou、Xiao-Xiao Yu、Li-Sheng Wang、Yan-Dong Wu、An-Xin Wu
DOI:10.1021/acs.joc.1c01702
日期:2021.10.1
We herein report an iodine-mediated formal [2 + 2 + 1] cyclization of methyl ketones, p-toluenesulfonyl hydrazines, and 1-aminopyridinium iodide for preparation of 4-aryl-NH-1,2,3-triazoles under metal- and azide-free conditions. Notably, this is achieved using p-toluenesulfonyl hydrazines and 1-aminopyridinium iodide as azide surrogates, providing a novel route toNH-1,2,3-triazoles. Furthermore, this
本文我们报告碘介导的正式[2 + 2 + 1]甲基酮,环化p甲苯磺酰肼,和1-氨基吡啶碘化物用于制备4-芳基- NH下金属-1,2,3-三唑和无叠氮化物条件。值得注意的是,这是使用对甲苯磺酰肼和碘化 1-氨基吡啶鎓作为叠氮化物替代物实现的,为NH -1,2,3-三唑提供了一条新途径。此外,这种方法提供了对吲哚胺 2,3-双加氧酶 (IDO) 的强效抑制剂的快速且实用的途径。