作者:Shihao Chen、Yaping Li、Ming Wang、Xuefeng Jiang
DOI:10.1039/c9gc03841h
日期:——
sulfones with a facile combination of halides, sulfur dioxide surrogates and phosphate esters is described. When thiourea dioxide was employed as a reductive sulfur dioxide surrogate, alkyl–alkyl sulfones were obtained under transition metal free conditions. Aryl–alkyl sulfones were obtained with an extremely low catalytic loading (0.2 mol%) via altering the mask of sulfur dioxide surrogates to sodium
描述了一种高效的一步法合成烷基-烷基和芳基-烷基砜以及卤化物,二氧化硫替代物和磷酸酯的简便组合物。当使用二氧化硫脲作为还原性二氧化硫替代物时,在无过渡金属的条件下获得了烷基-烷基砜。通过改变二氧化硫代用品对连二亚硫酸钠的掩膜,可以以极低的催化负载量(0.2摩尔%)获得芳基烷基砜。使用磷酸酯作为稳定且容易获得的烷基源。值得注意的是,该协议已应用于天然产物和生物活性分子的后期修饰。