Palladium-catalyzed hydrostannylation of acetylenic sulfones 1 in benzene at room temperature gives stereoselectively (E)-α-stannylvinyl sulfones 2 in good yields. (E)-α-Stannylvinyl sulfones 2 are new difunctional group reagents which undergo Stille coupling reactions with alkenyl iodides 3 to afford stereoselectively 1,3-dienyl sulfones 4 in high yields.
室温下
钯催化的
乙炔砜1在苯中的加氢
苯乙烯基化反应以良好的收率选择性生成立体选择性(E)-α-
锡烷基
乙烯基砜2。(E)-α-
苯乙烯基
乙烯基砜2是新的双官能团试剂,其与烯基
碘化物3进行Stille偶联反应,以高产率提供立体选择性的1,3-二烯基砜4。