Palladium/Norbornene-Catalyzed Ortho-Acylation and Ipso-Selenation via C(O)–Se Bond Cleavage: Synthesis of α-Carbonyl Selane
摘要:
A palladium/norbornene-catalyzed synthetic method that combines selective ortho C-H bond activation with sequential reactions to form complex selenide compounds has been developed. The C(O)-Se bond in selenoates is successfully cleaved, and various kinds of alpha-carbonyl selanes were synthesized in decent to excellent yields. The reaction has good functional group tolerance and broad substrate scope.
已经开发了一种用于从芳基碘化物和二芳基二硒化物合成硒代酯的新催化方案,其中甲酸被用作有毒和气态 CO 的有效、低成本和安全的替代品。该协议具有高官能团耐受性,在温和的反应条件下以高产率(高达 97%)获得一大类硒代酯,避免使用难以操作、易氧化且气味难闻的硒醇。此外,通过首次使用二有机基二硫化物作为前体,该方法可以有效地扩展到具有中等至优异产率的硫酯的合成。
It was found that palladium complex catalyzed three-component coupling of phenyl tributylstannyl selenide with aryl iodides and carbonmonoxide to afford the corresponding selenol esters in moderate to good yields.