enantioselective Mannich‐type reaction of glycine Schiff bases with cyclic ketimines was developed, affording chiral α,ß‐diamino acid derivatives in good yields with moderate to good ee and dr values. This provides an efficient methodology for furnishing chiral Cβ‐tetrasubstituted α,β‐diamino acid precursors. The catalytic system is compatible with a series of substrates. In addition, an interesting nonlinear
开发了Cu(II)/ RuPHOX催化的甘
氨酸席夫碱与环状
酮亚胺的对映选择性曼尼希型反应,可提供高收率的手性α,β-二
氨基酸衍
生物,且ee和dr值适中。这提供了用于供给手性℃的高效方法β -tetrasubstituted α,β -二
氨基酸前体。该催化系统与一系列底物兼容。另外,观察到
催化剂的对映体组成对反应对映体选择性的有趣的非线性影响。