()- or ()-Allylsilanes were consecutively treated with butyllithium in the presence of potassium -butoxide (“Schlosser's base”) and methyl iodide or butyl iodide. The alkylation of the allylmetal intermediate occurred mainly or exclusively at the α-position, next to the heteroatom, and the configuration of the double bond was controlled.
在
丁醇钾(“ Schlosser碱”)和甲基
碘或丁基
碘的存在下,用丁基
锂连续处理()-或()-烯丙基
硅烷。烯丙基
金属中间体的烷基化主要或仅发生在杂原子旁的α位,并且控制了双键的构型。