elimination/protonation to produce allylic alcohols (X = O) and allylic sulfides (X = S). Mechanistic investigations support a stepwise pathway with zwitterionic intermediates for the first reaction class and a concerted pathway for the second reaction class. Additionally, the feasibility of chirality transfer from the planar-chiral ebthi (ebthi = ethylenebis(tetrahydroindenyl)) ligand was demonstrated with a chiral
                                    研究了双(
环戊二烯基)(叔丁基亚
氨基)
锆配合物(Cp(2)Zr = Nt-Bu)(THF)(1)与
环氧化物,
氮丙啶和环
硫化物的反应。没有可及的β-氢的杂环经过CX键的插入/质子化以生成1,2-
氨基醇(X = O)和1,2-二胺(X = NR),而具有可及的β-氢的杂环经过消除/质子化生产烯丙基醇(X = O)和烯丙基
硫化物(X = S)。机理研究为两步反应提供了两性离子中间体的逐步途径,为第二步反应提供了协同的途径。另外,用手性类似物,(ebthi)-Zr = NAr(THF)(Ar = 2,6-二甲基苯基),证明了从平面手性ebthi(ebthi =乙撑双(四氢
茚基))
配体进行手性转移的可行性,