An alternative metal-free, efficient and practical approach for the preparation of phosphinothioates is established via the aerobic oxidative cross-dehydrogenative coupling (CDC) of sulfonyl hydrazides with secondary phosphine oxides catalyzed by tetrabutylammonium iodide (TBAI) in the presence of atmospheric oxygen. The strategy provides an array of diverse phosphinothioates in good to excellent yields. Furthermore, two representative bioactive molecules are synthesized on up to gram scale by utilizing this method.
一种无金属、高效且实用的方法用于制备磷硫酸酯,通过在大气氧气存在下,以四丁基碘化铵(TBAI)为催化剂,利用磺酰肼与二级膦氧化物进行氧化交叉脱氢偶联(CDC)反应建立。该策略以良好至优异的产率提供多样的磷硫酸酯。此外,利用该方法,还可以在克级规模上合成两种代表性的生物活性分子。