Change in the Product Selectivity in the Visible Light-Induced Selenium Radical-Mediated 1,4-Aryl Migration Process
作者:Mithu Roy、Ramen Jamatia、Arup Samanta、Kailash Mohar、Dipankar Srimani
DOI:10.1021/acs.orglett.2c03260
日期:2022.11.11
Herein, we demonstrate a visible light-induced selenium radical-mediated domino reaction of aryl alkynoates, for the synthesis of 1,1-diselenide alkene derivatives and selenium-containing α,β-unsaturated carboxylic acid. The process is mild, metal free, easy to handle, and scalable. The decarboxylation step can be controlled by applying a catalytic amount of Eosin Y dye and cesium carbonate as a base
在此,我们展示了可见光诱导的硒自由基介导的芳基炔酸酯的多米诺骨牌反应,用于合成 1,1-二硒化物烯烃衍生物和含硒 α,β-不饱和羧酸。该工艺温和、不含金属、易于处理且可扩展。脱羧步骤可以通过应用催化量的曙红 Y 染料和碳酸铯作为碱来控制。该方法显示出良好的官能团耐受性,并提供了不错的产品产量。此外,通过制备烯丙醇、α、β-不饱和酯和乙烯基卤化物,进一步扩展了该协议的合成效用。