Property and Reactivity of Fluoro(silyl)acetylenes and Fluoro(stannyl)acetylenes
摘要:
Fluoro(silyl)acetylenes and fluoro(stannyl)acetylenes underwent a radical addition reaction of THF to furnish the corresponding fluorinated cyclic ethers in moderate to good yields. These intriguing addition reaction proved to proceed via a radical reaction mechanism.
Fluoro(silyl)acetylenes and fluoro(stannyl)acetylenes underwent a radical addition reaction of THF to furnish the corresponding fluorinated cyclic ethers in moderate to good yields. These intriguing addition reaction proved to proceed via a radical reaction mechanism.
Regio- and stereoselective synthesis of tetrasubstituted (<i>E</i>)-(2-chloro-2-fluoro-1-iodovinyl)dimethylphenylsilane and its desilylative sonogashira coupling
Trihalo-substituted vinylsilane was readily synthesized in 77% yield and in an excellent regio- and stereoselective manner from in situ-generated fluorosilylacetylene, followed by the addition of I2 and NCS. The silane was committed to sequential Sonogashira coupling with various terminal acetylenes under mild conditions, affording desilylated chlorofluoro-enyne adducts in moderate to good yields.
三卤取代的乙烯基硅烷很容易以 77% 的产率合成,并以出色的区域和立体选择性方式从原位生成的氟甲硅烷基乙炔中合成,然后添加 I 2和 NCS。硅烷致力于在温和条件下与各种末端乙炔进行连续的 Sonogashira 偶联,以中等到良好的收率提供脱甲硅烷基化的氯氟-烯炔加合物。