Au-Catalyzed Stereoselective Ritter Reaction of Haloalkynes with Nitriles for (<i>Z</i>
)-<i>β</i>
-Halogenated Enamides
作者:Congrong Liu、Fulai Yang
DOI:10.1002/ejoc.201901318
日期:2019.10.31
An efficient and stereoselective protocol has been developed for the synthesis (Z)‐β‐Halogenated enamide via gold catalyzed Ritter reaction. In the presence of 2 mol‐% BrettPhosAuCl and 2 mol‐% AgNTf2, a broad range of nitriles smoothly underwent Ritter reaction with aromatic, vinylic or aliphatic haloalkynes to give structurally diverse (Z)‐β‐Halogenated enamides in excellent to good yields.
Au-Catalyzed Addition of Nucleophiles to Chloroalkynes: A Regio- and Stereoselective Synthesis of (<i>Z</i>
)-Alkenyl Chlorides
作者:Congrong Liu、Yunbo Xue、Lianghui Ding、Haiyun Zhang、Fulai Yang
DOI:10.1002/ejoc.201801222
日期:2018.12.13
developed for the regio‐ and stereoselectivesynthesis of (Z)‐alkenyl chlorides via the gold‐catalyzed addition between chloroalkynes and protic nucleophiles. A broad range of protic nucleophiles smoothly react with aromatic, vinylic, or aliphatic chloroalkynes to afford various functionalized (Z)‐alkenyl chlorides with high to excellent yields and extremely high stereoselectivity.
This report showcases the stereospecific and modular synthesis of vinyl cyclopropanes in less than 30 min at room temperature, employing air-stable dinuclear PdI catalysis.