Enzyme-Inspired Chiral Secondary-Phosphine-Oxide Ligand with Dual Noncovalent Interactions for Asymmetric Hydrogenation
作者:Caiyou Chen、Zhefan Zhang、Shicheng Jin、Xiangru Fan、Mingyu Geng、Yan Zhou、Songwei Wen、Xinrui Wang、Lung Wa Chung、Xiu-Qin Dong、Xumu Zhang
DOI:10.1002/anie.201701394
日期:2017.6.6
Inspired by the unique character of enzymes, we developed novel chiral SPO (secondary‐phosphine‐oxide) ligand (SPO‐Wudaphos) which can enter into both ion pair and H‐bond noncovalent interactions. The novel chiral SPO‐Wudaphos exhibited excellent results in the asymmetric hydrogenation of α‐methylene‐γ‐keto carboxylic acids, affording the chiral γ‐keto acids with up to over 99 % ee. A series of control
受酶的独特特性的启发,我们开发了新型手性SPO(仲氧化膦)配体(SPO-Wudaphos),它可以参与离子对和氢键非共价相互作用。新型手性SPO-Wudaphos在α-亚甲基-γ-酮基羧酸的不对称加氢中显示出优异的结果,使手性γ-酮酸的ee高达99%以上 。进行了一系列的控制实验和DFT计算,以说明离子对和氢键非共价相互作用的关键作用。