with Hg(OAc)2 in AcOH to give (Me3Si)2C(SiMe2OAc)2, under conditions in which the chloride (Me3Si)3CSiMe2Cl is inert. Similarly, (Me3Si)2C(SiMe2OAc)2 reacts with CF3CO2H to give (Me3Si)2C[SiMe2(O2CCF3)]2 under conditions in which (Me3Si)3CSiMe2OAc is inert. The results can be accounted for in terms of anchimeric assistance by the neighbouring acetoxy or trifluoroacetoxy group to the breaking of the SiCl
化合物(ME 3 Si)的3种CSiMeClI发生反应与
汞(
OAC)2的AcOH,得到(ME 3 Si)的2 C(森达2
OAC)2,其中,所述
氯化物(ME的条件下3 Si)的3 CSiMe 2 C1是惰性的。类似地,(ME 3 Si)的2 C(森达2
OAC)2分发生反应用CF 3 CO 2小时,得到(ME 3 Si)的2 C [森达2(O 2 CCF 3)] 2的条件下,其中(我3 Si)3 CSiMe 2
OAc是惰性的。该结果可以通过相邻的乙酰
氧基或三
氟乙酰氧基的邻
甲酸酯辅助来破坏SiCl或Si
OAc键来解释。