Nickel-Catalyzed Regioselective Cleavage of C<sub>sp<sup>2</sup></sub>–S Bonds: Method for the Synthesis of Tri- and Tetrasubstituted Alkenes
作者:Jinyang Chen、Sihai Chen、Xinhua Xu、Zhi Tang、Chak-Tong Au、Renhua Qiu
DOI:10.1021/acs.joc.6b00203
日期:2016.4.15
We describe here an efficient route for the synthesis of (Z)-vinylic sulfides 3 via the highly regio- and stereoselective coupling of (Z)-1,2-bis(aryl(alkyl)thio)alkenes and Grignard reagents over a Ni catalyst under mild conditions. (Z)-Vinylic sulfides 3 are important intermediates in the synthesis of tri- and tetrasubstituted alkenes that are important construction blocks for drugs and natural products
我们在这里描述了通过Ni催化剂上的(Z)-1,2-双(芳基(烷基)硫代)烯烃和格氏试剂的高度区域选择性和立体选择性偶联来合成(Z)-乙烯基硫化物3的有效途径在温和的条件下。(Z)-Vinylic硫化物3是三和四取代烯烃合成的重要中间体,这是药物和天然产物的重要结构单元。可以使用H 2 O 2将定向有机硫基团(SR)转化为二芳基(烷基)二硫化物(RSSR)。作为氧化剂,避免了硫资源的浪费。该协议提供了一种高度区域选择性和立体选择性的通用方法,用于合成多种三取代和四取代的烯烃。