Alkylation of ferrocene bis-imines Fc[NC(H)Ar]2
(Ar = Ph, p-Tol) with MeLi was found to proceed in a highly diastereoselective fashion producing the C2-symmetric ferrocene diamines Fc[NC(H)(Me)Ar]2–H2 with 90% diastereomeric excess. This process allowed for the synthesis of C2-symmetric zirconium complexes Fc[NC(Me)Ar]ZrBn2.
用 MeLi 烷基化
二茂铁双
亚胺 Fc[NC(H)Ar]2(Ar = Ph、p-Tol)的过程具有高度非对映选择性,可生成 C2 对称
二茂铁二胺 Fc[NC(H)(Me)Ar]2-H2,非对映过量率为 90%。通过这一过程可以合成 C2 对称的
锆配合物 Fc[NC(Me)Ar]ZrBn2 。