for the asymmetric construction of the useful and important skeleton of the bicyclic N,O‐acetals is described. CuII/SaBOX could catalyze the reaction of β,γ‐unsaturated α‐ketoesters with cyclic enamines efficiently, thus affording the desired products in excellent yields with excellent stereoselectivities (21 examples; up to 99 % yields; up to >95:5 d.r.; and 95–99 % ee). This reaction can be well performed
描述了不对称构造双环N,O-
乙缩醛的有用和重要骨架的便捷有效途径。Cu II / SaBOX可以有效催化β,γ-不饱和α-
酮酸酯与环状烯胺的反应,从而以优异的收率和优异的立体选择性提供所需的产物(21个实例;最高99%的产率;最高> 95:5 dr ;和95–99%ee)。即使仅负载1mol%的催化剂,该反应也可以以克为单位很好地进行。
铜配合物的单晶结构使人们对侧臂的立体协同效应有了很好的了解。