Ammonium Iodide-Mediated Regioselective Chalcogenation of Chromones with Diaryl Disulfides and Diselenides

2017-08-11T13:50:24Z (GMT) by Tao Guo
<p>A metal-free method for the synthesis of 3-chalcogenyl-chromones/quinolones from chromones/quinolones and diorganyl dichalcogenides using ammonium iodide under air was developed. This approach allowed the preparation of a wide range of 3-selenyl- and 3-sulfenyl-chromones/quinolones in good to excellent yields.</p>