Cu II -catalysed asymmetric 1,3-dipolar cycloaddition of azomethine ylides with a chiral ferrocene-derived P,N-ligand
作者:Bilel Bdiri、Li Dai、Zhi-Ming Zhou
DOI:10.1016/j.tetlet.2017.05.044
日期:2017.6
A ferrocene-derived P,N-heterodonor ligand was effectively used in a Cu(OAc)2·H2O-catalysed asymmetric 1,3-dipolar cycloaddition of azomethine ylides with maleate derivatives, affording cycloadducts with high yields (up to 96%), diastereoselectivities (>99 dr), and enantioselectivities (up to 99% ee).
二茂铁衍生的P,N-异杂炔配体可有效地用于Cu(OAc)2 ·H 2 O催化的偶氮甲亚胺与马来酸酯衍生物的不对称1,3-偶极环加成反应,提供高收率的环加合物(高达96% ),非对映选择性(> 99 dr)和对映选择性(最高99%ee)。