(S)-tert-Butylsulfinylferrocene was submitted to ortho-metalation, and the corresponding lithium derivative was trapped by alkyl or aryl imines bearing various electron-withdrawing groups on the nitrogen atom (Ts, Dpp, Boc). New aminosulfoxides were obtained with complete diastereocontrol when Dpp or Boc groups were used. The absolute configuration (SS,SFc,S) has been determined by single-crystal X-ray
将(S)-叔丁基亚磺酰基
二茂铁进行正
金属化,相应的
锂衍
生物被氮原子上带有各种吸电子基团的烷基或芳基
亚胺捕获(Ts,Dpp,Boc)。当使用Dpp或Boc基团时,在完全非对映异构控制下获得了新的
氨基亚砜。绝对构型(S S,S Fc,S)已通过单晶X射线分析和
化学相关性确定。已经提出了一种不寻常的伪环舟状过渡态来解释该反应的立体
化学过程。