A facile method for the preparation of highly active and enantioselective yttrium precatalysts for asymmetric hydroamination of gem-disubstituted aminoalkenes, from the combination of YCl3 or YCl3(THF)3.5 with ligand (R)-L1 and n-BuLi is described.
                                    描述了一种通过 YCl3 或 YCl3(THF)3.5 与
配体 (R)-L1 和 n-BuLi 的组合制备用于偕二取代
氨基烯烃不对称
氢胺化的高活性和对映选择性
钇预催化剂的简便方法。