Vancomycin-Iridium (III) Interaction: An Unexplored Route for Enantioselective Imine Reduction
作者:Giorgio Facchetti、Sara Pellegrino、Raffaella Bucci、Donatella Nava、Raffaella Gandolfi、Michael S. Christodoulou、Isabella Rimoldi
DOI:10.3390/molecules24152771
日期:——
that Van is able to coordinate iridium (Ir(III)) and the complexation was demonstrated by several analytical techniques such as MALDI-TOF, UV, Circular dichroism (CD), Raman IR, and NMR. The hybrid system so obtained was employed in the Asymmetric Transfer Hydrogenation (ATH) of cyclic imines allowing to obtain a valuable 61% e.e. (R) in the asymmetric reduction of quinaldine 2. The catalytic system exhibited
抗生素万古霉素 (Van) 的手性结构被用作一种创新的配位球,用于制备基于 IrCp* 的混合催化剂。我们发现 Van 能够配位铱 (Ir(III)),并且通过 MALDI-TOF、UV、圆二色性 (CD)、拉曼 IR 和 NMR 等多种分析技术证明了络合。如此获得的混合系统用于环状亚胺的不对称转移氢化 (ATH),允许在喹哪啶 2 的不对称还原中获得有价值的 61% ee (R)。催化系统表现出饱和动力学,计算效率为 Kcat /KM = 0.688 h-1mM-1。