Chemoselective Oxidative Spiroetherification and Spiroamination of Arenols Using I<sup>+</sup>/Oxone Catalysis
作者:Muhammet Uyanik、Naoto Sahara、Outa Katade、Kazuaki Ishihara
DOI:10.1021/acs.orglett.9b04324
日期:2020.1.17
We developed a chemoselective oxidative dearomative spiroetherification and spiroamination of arenols using I+/oxone catalysis. The intramolecular dearomative C-O and C-N couplings proceeded much more efficiently under slightly acidic conditions to give the corresponding spiro adducts in higher yields compared with previous methods using transition metal or hypervalent iodine catalysts. Control experiments
我们开发了一种使用I + /氧杂环丁烷催化的化学选择性氧化脱芳基螺醚化和芳烃的螺氨基化方法。与以前使用过渡金属或高价碘催化剂的方法相比,分子内脱芳香性的CO和CN偶联在弱酸性条件下进行的效率更高,从而以更高的收率得到相应的螺环加合物。对照实验表明,次碘酸和碘可能是这些反应的活性物质。