Cu2O-catalyzed C–S bond cross coupling of alkane-/arene-sulfinates and (enantioenriched) benzylic quaternary ammonium salts has been developed. The product benzylic sulfones were obtained in good to high yields (75–96%). Chiral arylmethyl sulfones with high enantiomeric excess (90–94% ee) were also synthesized in the presence of Cu2O and 1,1′-bis-(diphenylphosphino)ferrocene (dppf).
已经开发了一种新的协议,该协议通过
烷烃/
芳烃亚
磺酸盐和(对映体富集的)苄基季
铵盐的Cu 2 O催化的C–S键交叉偶联来合成(对映体富集的)
苄基砜。获得的
苄基砜产品收率良好至高(75-96%)。在Cu 2 O和1,1'-双-(
二苯基膦基)
二茂铁(dppf)存在下,还合成了具有高对映体过量(90-94%ee)的手性芳基甲基砜。