Syntheses and structures of lithiated sulfones Li[CR(R′)SO2Ph] – C versus O bound lithium. [{Li{CH(Me)SO2Ph}(thf)}∞] – The structure of a C-bound derivative
作者:Matthias Linnert、Clemens Bruhn、Christoph Wagner、Dirk Steinborn
DOI:10.1016/j.jorganchem.2005.12.048
日期:2006.5
yielding under deprotonation Li[CR(R′)SO2Ph] which reacted with Me3SiCl and n-Bu3SnCl forming the requisite trimethylsilyl and tri(n -butyl)tin substituted derivatives R3″E-C(R)R′SO2Ph(R3″E=Me3Si,n-Bu3Sn). Performing the reactions of RCH(R′)SO2Ph with n-BuLi in n-hexane (instead of thf/n-hexane) and toluene/n-hexane, respectively, resulted in the precipitation of the organo lithium compounds Li[CR(R′)SO2Ph]
砜RCH(R')SO 2 pH值与反应Ñ在THF /正丁基锂Ñ(= H / Me的中,Me / ET,H / CH己烷R / R' 2 P h和甲苯/)ñ己烷(R / R'= Me / Ph)在去质子化反应中生成Li [CR(R')SO 2 Ph],它与Me 3 SiCl和n- Bu 3 SnCl反应形成必要的三甲基甲硅烷基和三(正 丁基)锡取代的衍生物R3“ EC (R)R′SO 2 Ph(R 3″ E = Me 3 Si,n-Bu 3 Sn)。执行RCH(R')SO的反应2 pH值Ñ正丁基锂在Ñ正己烷(代替THF / Ñ己烷)和甲苯/ Ñ己烷,分别导致了有机锂化合物的Li [CR(R')SO的沉淀2 PH](1 - 4),其被分离为以基本上定量的产率强烈湿气敏感的黄色粉末。他们的身份被确认1 H和13个C NMR光谱测量在THF- d 8。每个解1,3和4在THF / Ñ己烷和THF