A Phosphine-Free Manganese Catalyst Enables Stereoselective Synthesis of (1 + <i>n</i>)-Membered Cycloalkanes from Methyl Ketones and 1,<i>n</i>-Diols
作者:Akash Jana、Kuhali Das、Abhishek Kundu、Pradip Ramdas Thorve、Debashis Adhikari、Biplab Maji
DOI:10.1021/acscatal.9b05567
日期:2020.2.21
Herein, we report the stereoselective synthesis of (1 + n)-membered cycloalkane from methyl ketone and 1,n-diol. A manganese(I) complex bearing a phosphine-free ligand catalyzed the reaction, which involved the formation of two C–C bonds via a sequence of intermolecular- and intramolecular-borrowing hydrogenation reactions. It produces 2 mol of water as the sole byproduct, making the process atom economical
本文中,我们报道了由甲基酮和1,n-二醇立体选择性合成(1 + n)元环烷烃。带有无膦配体的锰(I)配合物催化了该反应,该过程涉及通过一系列分子间和分子内借位的氢化反应形成两个CC键。它产生2摩尔的水作为唯一的副产品,使该工艺原子经济且对环境无害。以非常高的选择性,以良好至优异的产率获得了多取代的环烷烃。通过高级DFT计算进行的全面机械分析合理化了对钳子的选择,并确定了这种有效转化过程中配体半合性的作用。