AbstractHerein, we develop a metal catalyst‐free protocol forO‐arylation of benzamide hydroxamate esters. The chemoselectiveO‐versus N‐arylation of the amides was tuned by varying the electronic and/or steric properties of the diaryliodonium salt and/or the substrate. TheO‐arylation reaction would preferentially occur for sterically and electronically diverse substrates. This study, which reveals the possibility of substituent‐ and reagent‐controlled chemoselectivity, with diaryliodonium salts might attract interest in the area of hypervalent iodine chemistry.
摘要我们在此开发了一种无金属催化剂的苯甲酰胺羟酰胺酯 O-芳基化方案。通过改变二里碘鎓盐和/或底物的电子和/或立体特性,可以调整酰胺的化学选择性 O- 对 N-芳香化反应。对于立体和电子性质不同的底物,O-芳基化反应会优先发生。这项研究揭示了取代基和试剂控制二芳碘鎓盐化学选择性的可能性,可能会引起超价碘化学领域的兴趣。