作者:Tiezheng Jia、Ana Bellomo、Kawtar EL Baina、Spencer D. Dreher、Patrick J. Walsh
DOI:10.1021/ja4009776
日期:2013.3.13
The palladium-catalyzed α-arylation of unactivated sulfoxides has been developed. The weakly acidic α-protons of sulfoxides are reversibly deprotonated by LiOtBu, and a palladium phosphine complex facilitates the arylation. A variety of aryl methyl sulfoxides were coupled with aryl bromides. More challenging coupling partners, such as alkyl methyl sulfoxides (including dimethyl sulfoxide) and aryl chlorides
已开发出钯催化的未活化亚砜的 α-芳基化。亚砜的弱酸性 α-质子被 LiOtBu 可逆地去质子化,钯膦配合物促进芳基化。多种芳基甲基亚砜与芳基溴化物偶联。更具挑战性的偶联伙伴,如烷基甲基亚砜(包括二甲基亚砜)和芳基氯,在优化条件下被证明是合适的。该方法用于合成具有生物活性的苄基亚砜中间体。